A good sleeping bag is one of the most important investments an avid outdoors person will make.Our team has collectively tested piles of these puffy down cocoons for more than a decade now, and current authors have put over 100 of the best backpacking sleeping bags through the paces in our search.

　　From the snow-blasted alpine of Colorado to the African savannah — and even while dangling during big wall ascents in Yosemite — we rolled out our mobile beds and compared them side-by-side to find the ideal bags for anyone. Whether youre after the do-it-all Therm-a-Rest Parsec or more budget-minded Mountain Hardwear Bishop Pass, weve got recommendations for everyone.

　　To evaluate the best backpacking sleeping bags, we certainly racked up the trail miles, but we also devised a series of tests to compare these bags fairly. From temperature and loft testing to moisture resistance and compressed sizes, we got the down-low for ourselves. All of our testing and experience inform our recommendations, and were sure that these are the best bags available today.

　　Editor’s Note: We updated our Backpacking Sleeping Bags guide on March 10, 2025, to add the REI Co-op Trailmade as our choice for those looking for an entry-level synthetic bag, the Katabatic Alsek as our new Best Backpacking Quilt, and the Sea to Summit Spark as an excellent lightweight option.

　　The Best Backpacking Sleeping Bags of 2025 Best Overall Backpacking Sleeping Bag: Therm-a-Rest Parsec Best Budget Down Backpacking Sleeping Bag: Mountain Hardwear Bishop Pass Best Synthetic Bag for Getting into Backpacking: REI Co-op Trailmade Most Comfortable Bag for Active Sleepers: NEMO Disco Best Backpacking Quilt: Katabatic Alsek 22 Quilt Best Winter and Expedition Sleeping Bag: Mountain Hardwear Phantom Most Inclusive Sizing Sleeping Bag: REI Co-op Magma Therm-a-Rest Parsec CHECK 20° PRICE AT REICHECK 32° PRICE AT REI$520 at Amazon

　　8.7 How we rate products Specifications Shell Fabric: 100% recycled ripstop nylon w/ DWR Available Temperature Ratings: 0, 20 (tested), 32°F Available Sizes: Small, Regular, Long Tested Packed Volume: 7.2 L (20°F) Tested Weight: 1 lbs., 12 oz. (regular) Tested Fill Weight: 1 lb. Insulation: 800-fill hydrophobic down Pros Heat-mapped, zoned insulation External zippered pocket Baffled pocket of insulation at feet Cons On the heavy side Expensive Chris Carter Cozy (and we mean it) face and internal fabric encapsulate the fluffy 800-fill pillow-like down of this bag, making it one of the more comfortable models we have tried and, ultimately, the best overall. The Therm-a-Rest Parsec ($470) is designed for lightweight chilly backcountry excursions — and wed say it knocks it out of the park for a whole slew of different adventures.

　　A few key features nudge this unique bag above a lot of the winter-ready competition in our opinion. Therm-a-Rest added a baffled pocket of insulation to the toebox, dubbed a Toe-asis Foot Warmer, which rapidly traps heat around cold feet once you settle in for the night. This is a cherished addition, given some of our propensities for chilly extremities while sleeping.

　　We also appreciate the removable straps on the bottom of the bag (similar to those used in backpacking quilts). These straps can be secured around your sleeping pad, preventing you from sliding around and boosting the thermal efficiency of your sleep system. We take these off for missions where weight is a concern but appreciate them when we can afford the luxury.

　　At over two pounds, the 0-degree version would be overkill for summer and some shoulder-season trips, but the warmth-to-weight ratio is quite stellar for a four-season sleeping bag. The 20-degree option we tested offers greater versatility for warmer excursions. Insulation is heat-mapped around the bag, concentrating on areas of your body where you need it most. This reduces the overall pack size and weight while still delivering a solid punch of heat when temps plummet.

　　For icy winter nights on long forays in the wilderness — or just about any adventure you could cook up — the Parsec 20-degree bag is the portable bed you need.

　　Best Budget Down Backpacking Sleeping Bag Mountain Hardwear Bishop Pass check 0° price at reicheck 15° price at reicheck 30° price at rei

　　6.9 How we rate products Specifications Shell Fabric: 20-denier ripstop nylon Available Temperature Ratings: 0, 15 (tested), 30°F Available Sizes: Mens and Women Regular and Long Tested Packed Volume: 8 L Tested Weight: 2 lbs., 5 oz. Tested Fill Weight: 1 lb., 5.2 oz. Insulation: 650-fill down Pros Ripstop fabric Plush liner Ergonomic foot compartment Can zip together with other MH bags Cons Less packable than other options Small neck baffle Heavier than bags with higher fill power Chris Carter The Mountain Hardwear Bishop Pass ($285) earns its place on the podium as our best budget down bag thanks to its versatility and wallet-friendly price tag. This bag is available in 0, 15, and 30°F variations, and after testing the middle of the pack option for more than a year, we found it delivers ample insulation, a decent packed size and weight, and sturdy materials at a very reasonable price.

　　Its 650 fill-down lofts to 5.5 inches and is protected by a DWR (durable water-repellent) ripstop nylon shell. The 20-denier shell holds up well to abuse, and the 30-denier liner is soft against the skin. At two and a quarter pounds, this bag is an average weight for its class.

　　We also loved that it can be zipped together with other MHW bags with the opposite side zipper for a larger shared bed for two. While this bag might not be the warmest or lightest in the lineup, it is more durable than some of its thin-skinned competitors. The materials are a bit sturdier, which does keep this bag above two pounds.

　　One minor complaint is that we prefer a bigger, circumferential draft tube at the neck (like those on the Mountain Hardwear Phantom or Western Mountaineering AlpinLite), but the collar baffle does a decent job of keeping cold air out. Also, it doesn’t pack as small as other bags with higher down fill power, but for the price, its well permissable.

　　As a mummy-shaped bag, the Bishop Pass will be more thermally efficient than roomier bags, but if you know youre liable to toss and turn, consider a spoon-shaped bag like the NEMO Disco. Youll only need to shell out $30-40 more for it, and the interior space makes it a cross-over-worthy bag that can go backpacking and camping.

　　If you’re on more of a budget but still looking for a bag that performs well, the Bishop Pass checks all the boxes without compromising too much in terms of quality. It’s a great choice for folks who want the warmth and packability of a down sleeping bag without the high price tag of top-tier models.

　　Best Synthetic Bag for Getting into Backpacking REI Co-op Trailmade 20 Sleeping Bag Check Price at REI

　　6.3 How we rate products Specifications Shell Fabric: Recycled polyester Available Temperature Ratings: 20°F (tested) Available Sizes: Short, Short Wide, Regular (tested), Regular Wide, Long, Long Wide Tested Packed Volume: 9.4 L Tested Weight: 3 lbs., 4.6 oz. Tested Fill Weight: N/A Insulation: Recycled polyester Pros Excellent value Insulation handles moisture well Breast cellphone pocket Long upper/lower zips offer easy ventilation Accurate temperature rating Cons Lower zippers prone to snagging Bulky Difficult drawstrings for the hood Chris Carter Read Review: REI Co-op Trailmade Sleeping Bag Review: A Tailored-Fit Slumber Made for All Sizes Made for hikers of all sizes, the newer-to-the-scene REI Co-op Trailmade Bags ($100) offer an impressive six different sizes made to fit anyone — regardless of labels. But even beyond the accommodating fit, the price is the big draw here, and for a Benjamin, you get a highly serviceable camp bag that’ll stick around for the long haul.

　　During our inaugural camping trip with this bag in Joshua Tree National Park during spring, we tested the Regular size and found it ideal for our 5’10”, 165-pound tester, and kept us warm down to 32 degrees F. The footbox was a surprising highlight of this relaxed mummy-cut bag, which sports a roomy ‘up-kick’ of space and allows for full extension of your tootsies without cold spots — very nice. The taper through the legs is a bit narrow, however, so those who aren’t used to the mummy cut might find the slumber a bit snug.

　　The Trailmade is currently only offered in a 20-degree temperature rating (that’s a comfort rating of ~31 degrees F), which through our testing, we found that most sleepers found accurate — save for some of the colder sleepers who generally don’t find synthetic bags as warm. We would love to see an additional warmer-temp summer bag for our mid-season excursions. 

　　The insulating properties of the recycled polyester fill aren’t anything to rave about, but it does its job admirably in this cut and provides a predictable amount of warmth. Additional niceties on the Trailmade include a snag-free zipper guide, as well as a stash pocket on the exterior of the bag for your phone, headlamp, or water filter. The exterior fabrics follow the same ‘heavier-but-durable’ ethos, and after two seasons of use now, are still holding up excellently.

　　Perfect for those who want to fine-tune their sleeping bag fit or just get outside without sacrificing the gas to get there, the Trailmade 20 has been a welcome addition to our gear closets and is a bag that’ll serve many in their introduction to the outdoors.

　　7.2 How we rate products Specifications Shell Fabric: Recycled polyester ripstop with C0 DWR finish Available Temperature Ratings: 15 (tested), 30°F Available Sizes: Mens (tested) and Women Regular and Long Tested Packed Volume: 6.4 L Tested Weight: 2 lbs., 11 oz. Tested Fill Weight: 1 lb., 7 oz. Insulation: 650 fill-power duck down Pros NEMOs spoon-shape bag is uber-comfortable, especially for those who toss and turn or side-sleep Updated Thermo Gill vents help modulate temperature Oversized draft collar is cozy to tuck into Smart manufacturing choices mean this bag is 100% recyclable at end-of-life Cons More of a backpacking bag, and might be more than you need for camping No footbox venting Chris Carter With 60 inches of shoulder girth and venting options for when things get too toasty, the NEMO Disco ($270) is one of our favorite bags for active sleepers. The ample room is coupled with two of NEMO’s Thermo-Gill vents that zip open to allow more space in the torso. Zip them shut on especially cold nights to keep more heat in and lessen the dead air space.

　　Its that spoon shape that really won us over, however, and for those with wider hips, it can be a game-changer. While the middle of this bag tapers a bit (to keep some thermal performance around your core), the footbox expands out to nearly the same width as the shoulders and allows for a number of different sleeping positions.

　　The 30-denier ripstop shell feels sturdy and held up well in testing on rough terrain. The nylon liner is also super soft and pleasant to sleep against. A final touch we appreciated is the breathable waterproof foot. Down loses warming power when wet and our feet are the first place to get saturated from condensation in the tent. It also touts one of our favorite bonuses: it comes with a compression sack.

　　Heavier fabric and plenty of fill mean that the 15-degree Disco we tested weighs in at a hefty 3 pounds, 5 ounces in the regular. This is still way lighter than a lot of bags but a full pound more than some of the ultralight bags tested. If youre after a bag that doesnt shortsheet you but still trims the fat a bit, consider some backpacking quilt options, such as the Katabatic Alsek or Enlightened Equipment Enigma, which both provide impressive room to move around in.

　　If you sleep on your side and loathe sleeping on your back, try the Disco — we dig the 30-degree version for middle-of-the-summer use and the 15 for shoulder season backpacking. This bag is well suited to those who need to dial in their temperature throughout the evening or who need some extra room to stretch out or move around.

　　Best Backpacking Quilt Katabatic Alsek 22 Quilt Check Price at Katabatic

　　8.3 How we rate products Specifications Shell Fabric: Pertex Quantum Eco Ripstop Available Temperature Ratings: 22°F (tested) Available Sizes: Short, Short Wide, Regular (tested), Regular Wide, Tall, Tall Wide Tested Packed Volume: 6.5 L Tested Weight: 1 lb., 7.3 oz. Tested Fill Weight: 15.2 oz. Insulation: 850- or 900-fill down Pros Conservatively temperature rated for most folks Impressively small packed size Wide range of sizes and different down fill types available Highly adjustable and draft-free pad system Well-stuffed draft collar Cons Quilt cant be converted fully into a blanket on warm nights Bit pricier than some comparable quilts out there Chris Carter Backpacking quilts are a whole other ballgame compared to sleeping bags, and while there are a vast number available, we’ve settled on the Katabatic Alsek 22 Quilt ($379) as the best out there for most folks.

　　Besides the packed volume and weight benefits of going with a quilt (on average 20-30% lighter), the versatility of open-backed camping insulation is huge: We initially tested this quilt on a late-season hike of PCT Section-J, where temps swung wide. Thankfully, the Alsek is amenable and handled everything from sub-30 to balmier 55-degree temps overnight.

　　The Alseks pad-attachment system is the best we’ve used. It consists of 2 mm cords that encircle your sleeping pad and attach to the quilt in four different spots. These can be snugged in to close or widened to provide more ventilation. Add an elastic binding on that back opening that keeps drafts at bay, and we’ve been cozy all night in this quilt.

　　Compared to standard bearers like the Enlightened Equipment Revelation (which we’ve previously awarded), we found the finish on the Katabatic line of quilts to be a cut above, with high-end Pertex fabrics being used. Also, while the temp ratings of EE quilts are a bit optimistic for some campers, the Alsek swings in the opposite direction and can often be taken down to its rating.

　　While the Alsek isnt able to be fully unzipped, we found that we lost less heat from its footbox compared to quilts that do turn into blankets. So youll trade some versatility, but for taking the quilt right down to the limit, we found it a worthy compromise. Its also still quite easy to pop a leg or two out overnight if things warm up too much.

　　Price is the trade here, but at $379, this quilt isn’t unobtainable (or even expensive compared to some 20-degree sleeping bags). With the ability to dial in your perfect quilt (there are six different sizes available and two down types), we think the Alsek 22 Quilt is an excellent option.

　　8.4 How we rate products Specifications Shell Fabric: 10-denier ripstop nylon Available Temperature Ratings: 0 (tested), 15, 30°F Available Sizes: Short, Regular (tested), Long Tested Packed Volume: 6 L Tested Weight: 2 lbs., 10.4 oz. Tested Fill Weight: 1 lb., 14.5 oz. Insulation: 800-fill down Pros Lightweight shell fabric keeps weight down 800-fill down Circumferential neck baffle Compression sack included Black lining dries out faster in the sun Cons Expensive Trim cut; not the best for stomach sleepers Chris Carter Newly trimmed out in 2024, the Mountain Hardwear Phantom ($580) borrows fabric from the brands legendary whisp of a down jacket, the Ghost Whisperer, and generally turns the dials in a bit more to create an even more fine-tuned sleeping bag for those headed into the alpine. Other notable updates include the pivot from a 20D nylon taffeta to a more premium (and lighter) 15D ripstop and an ever-so-lighter weight.

　　The tradeoff to a lighter fabric set throughout seems to have worked because even though the bag pivots to a slightly lesser 800-fill goose down (the previous version was 850), it is no heavier for it and still hits the same comfort and limited temperature ratings. The climbers and mountaineers among us flocked to the 0-degree version of this bag during testing, and after returning from far-flung exploits, they provided a unanimous yea.

　　The large foot box and 58 inches of shoulder girth allow for comfortable sleeping, with enough room to stuff a hot Nalgene at your feet to keep your toes warm. We found the 10-denier nylon fabric is tougher than most bags in its class. On cold nights, six inches of down and large baffles keep the draft and cold air out.

　　We really liked that the neck baffle encircles the entire circumference of the bag, offering protection to keep your body heat sealed in. This bag is offered in short, regular, long, and left or right zip. It also comes with its own compression sack.

　　Unfortunately, all of this bag’s warmth comes at a high price. Our biggest complaint is that it is not in the budget for many shoppers, but thats the price you pay for a hyper-specialized bag. A similarly specced option (with a more palatable price) is the REI Co-op Magma, which wed recommend to folks that the Phantom appeals to but dont have any big mountain needs.

　　Overall, the Mountain Hardwear Phantom is a must for any serious climber or winter backpacker looking for a lightweight adventure bag that doesn’t skimp on warmth or quality.

　　Most Inclusive Sizing Sleeping Bag REI Co-op Magma CHECK 15° PRICE AT REICHECK 30° PRICE AT REI

　　7.7 How we rate products Specifications Shell Fabric: Pertex 15-denier ripstop nylon Available Temperature Ratings: 15 (tested), 30°F Available Sizes: Short Narrow, Short, Short Wide, Medium Narrow, Medium (tested), Medium Wide, Long Narrow, Long (tested), Long Wide Tested Packed Volume: 8 L Tested Weight: 2 lbs., 3.6 oz. Tested Fill Weight: 1 lb., 7.3 oz. Insulation: 850-fill power down Pros Range of 9 sizes Great value ($430 for an 850-fill down bag) Low weight at just above 2 pounds Full-length zipper Great draft collar and hood Cons Included stuff sack isnt compressible Mummy design may feel too tight Only available in 15- and 30-degree models Chris Carter Read Review: Sleeping Bag for All Has 9 Different Sizes: REI Magma 15 Review Newly revamped in 2024, the REI Co-op Magma ($429) is back in a big way — having been totally rebuilt from the ground up and designed to offer 9 (!) total sizing combinations. From Short-Narrow to Long-Wide, REI has ditched the standard gendered convention as well to get more people in better-fitting sleeping bags, and our side-by-side testing shows that its working.

　　Thankfully, REI retained all that we loved about the previous version of the Magma: the 850-fill power down, the lightweight 15-denier Pertex nylon shell, and excellent packability are all still standouts, but those added sizings are what really won us over in the new version. We put in evenings in the Medium-Medium and Medium-Long cuts and found them to be sized perfectly.

　　Abandoning the gendered style of sizing sleeping bags will be a little confusing for some, which is why we highly recommend trying out the Magma in person before pulling the trigger on one. To be sure, the Magma is still a mummy bag through and through, which makes it ideal for backpacking, but accurate sizing is still important for proper fit. Thankfully, an ample vaulted foot box keeps things roomy for your feet.

　　One of our bigger gripes with the previous iteration of this 15-degree sleeping bag was a decided lack of warmth for such a rated bag — but no longer. REI added an average of 7 extra ounces of down across the size range, and this is now a toasty warm bag. Now, if they can overhaul the included stuff sack (which, unfortunately, has no compression system), well be square.

　　The mummy-cut Magma is pretty comparable to the Therm-a-Rest Parsec, but we found that bag to have a more generous cut through the legs, which won over those of us who toss and turn in the night. When youre checking out the Magma in-store to dial in your fit, make sure that the snug profile is to your liking.

　　If finding the perfect fitting sleeping bag has you tossing and turning, the Magma offers up a new way. With a recently boosted warmth, trim backpacking mummy cut, and overall light weight, this bag has backpacking chops, and it doesnt ask you to cram yourself into it to take advantage.

　　8.7 How we rate products Specifications Shell Fabric: Pertex Endurance UL Available Temperature Ratings: 20 (tested), 30°F Available Sizes: Regular (tested), Long Tested Packed Volume: 9 L Tested Weight: 1 lb., 8 oz. Tested Fill Weight: 14 oz. Insulation: 950+ fill goose down Pros Lightweight design rivals even quilts 950-fill goose down is super premium stuff Pertex Endurance shell is slick and smooth feeling Warm draft collar and zipper tubes Cons Snug fit throughout Few features — this is a quality-first sleeping bag Chris Carter Optimized for fast and light missions with chilly temps in the forecast, the Feathered Friends Hummingbird UL ($609) sleeping bag is designed to maximize warmth while maintaining a low, lightweight profile. With Pertex Endurance fabric and 950+ fill power down, it boasts the slimmest design and lightest weight in Feathered Friends’ lineup. The Hummingbird has replaced the popular Merlin 30 UL, so if you’re after that model — look no further.

　　We found the design of this bag to be thoughtfully made. It eliminated some issues we’ve had with sleeping bags in the past. One of the first things that struck us was the locking sliders on the two-way zipper. This pretty much completely eliminates the annoyance of the zipper snagging on overlapping fabric and getting stuck. A constant frustration we have with traditional bags.

　　We tested the 20-degree model in similar temps and found that to be an appropriate rating, keeping us toasty at 20 or a little below. The voluminous draft collar prevents cold air from slipping through the zippers, and we loved cowboy camping in windy conditions with it. The continuous baffles allow you to shuffle the insulation around easily, minimizing cold spots.

　　At 1 pound, 8 ounces for the 20-degree, this is one of the lighter three-season mummy bags out there. The superior warmth and wind resistance match that of heavier models, but the minimal weight is achieved by a pretty slim, simple design, which we found does cut down on overall comfort. This wasn’t too much of an issue for us, as we actually like the close-cut feel of a down coffin, but some may want more room to stretch out or splay their legs.

　　For those who want a bit more space (but are still after a lightweight bag), the Western Mountaineering AlpinLite is the roomier cut in the WM lineup, and while its 7 ounces heavier than the Hummingbird, its a good bit more liveable if youre going to be tucked into it for an extended trip. Know that both of these are bags that prioritize light weights and small packed sizes, and if you arent concerned with this, a better all-arounder like the Therm-a-Rest Parsec will serve you better.

　　As a true 3-season lightweight sleeping bag, the Hummingbird UL 20 stands out as one of the best backpacking sleeping bag choices for those looking to go the distance with as light a base weight as possible. For a more neutral balance between weight and space, be sure to check out Feathered Friends wildly popular Swallow UL bag.

　　Kelty Cosmic Down check 20° price at reicheck 0° price at reicheck 40° price at backcountry

　　6.5 How we rate products Specifications Shell Fabric: Recycled 20-denier nylon Available Temperature Ratings: 0, 20 (tested), 40°F Available Sizes: Mens and Women Regular and Long Tested Packed Volume: 10 L Tested Weight: 2 lbs., 7 oz. Tested Fill Weight: 1 lb., 0.4 oz. Insulation: 550-fill down Pros Very affordable pricing Dual sliders on the zipper for ventilation Down-fill at synthetic bag prices Zippered internal stash pocket Cons 550-fill down limits compression size Zipper sliders can snag Draft collar isnt very well insulated Chris Carter For hundreds less than many other bags on the market, the Kelty Cosmic Down ($170) does a lot for a little. By using a budget-friendly 550-fill down and leaving out a few features, you get a perfectly serviceable sleeping sack for backpacking through the summer months.

　　There are two big differences between budget and higher-end sleeping bags, and thats the insulation, and the trimmings. In the Cosmic 20, a lower fill power 550 down means that its not quite as thermally efficient as, say, the 950-fill in the Rab Mythic Ultra, but its still lightyears nicer to pack compared to synthetic. Youll mostly notice the difference in packed size with a lower fill power, and while a 10-liter compressed size isnt bad, higher-performance bags can get down to 7 or 8.

　　The cut of the Cosmic Down is a classic mummy with a bit of space let in, which helps to shore up the lesser fill-power down, but still isnt a constrictor. This is where we notice some of the cost-saving measures, however, and notably, the zippers on the Cosmic are lesser than other bags weve tested and dont incorporate any anti-snag sliders. Still, with a careful touch they work a treat, but need to be treated nicer than most.

　　While the Cosmic is undoubtedly bottom dollar, you can get a decently better bag if youre willing to spend a little more. The Mountain Hardwear Bishop Pass 15 makes use of a nicer 650-fill down, ripstop nylon shell (compared to the taffeta used in this bag), is a bit warmer and is lighter. Youll need to pay about double for the privilege, but after three seasons on both bags, the Bishop Pass is holding up a good bit better, so itll last longer.

　　Still, theres plenty of other backpacking kit to buy, and if you just need a bag to get you through (or want to pad out your closet with a loaner bag), the Cosmic Down 20 is well up to the task. For the price, we think it’s one of the better budget options out there today.

　　Rab Mythic Ultra Sleeping Bag CHECK 18° PRICE AT backcountryCHECK 32° PRICE AT backcountry

　　7.7 How we rate products Specifications Shell Fabric: 7-denier ripstop nylon Available Temperature Ratings: 18, 32°F (tested) Available Sizes: Regular, Long Tested Packed Volume: 5 L Tested Weight: 14.1 oz. Tested Fill Weight: 6.3 oz. Insulation: 900-fill down Pros Titanium-infused inner lining reflects body heat back to you Insanely packable at 5 liters compressed 950-fill power down is very warm and compressible Less than a pound Cons Zipper is comically small Expensive Chris Carter Perhaps one of the lightest full sleeping bags money can buy, the Rab Mythic Ultra ($600) series of bags is all about shaving grams. When we first saw this bag at Outdoor Retailer, we knew it would advance tech in the sleeping bag market. Now a few years down the road and an update later, were sure of it.

　　Leveraging what the brand calls its Thermo Ionic Lining Technology (TILT), the Mythic Ultra boasts an incredible warmth-to-weight ratio. It achieves this in three ways. First, Rab utilizes a trapezoidal baffle construction that expands outward from the body, meaning that theres more space on the exterior of the bag. This allows the down to fully loft when youre inside the bag, trapping as much heat as possible.

　　Second, and more importantly, Rab coats thin fibers within the bag with titanium. This helps reflect radiant body heat back toward the sleeper, keeping the bag warmer without adding more down. While we initially felt cautious that this might also trap moisture, our worries were unfounded. Because the coating isnt monolithic, the bag breathes as it should. Across all our testing, we agreed that this bag sleeps 10 degrees warmer than it looks like it should.

　　Lastly, it uses 900-fill down, one of the best warmth-to-weight insulators you can get in a sleeping bag — something only boutique bag makers like Feathered Friends or Enlightened Equipment will typically use. This also lends a big helping hand in making this bag supremely packable; its easily the smallest bag we could scrunch down in our compression testing.

　　Available in a 32-degree (which we tested) and 20-degree model, you can customize depending on the weather extremes you want to be prepared for. And while this bag is on the upper end of the price range, we believe the construction and materials justify the cost. Our only complaint was that it was very tight to get in and out of. This is par for the course for a lightweight mummy bag, but it is worth considering if you are larger or prefer side sleeping.

　　Staying light on all features, there’s just a single 1/8-length zipper. Overall, the Mythic Ultra proved to be the lightest and most packable option we tested. For the ultralight enthusiast, this might be the best backpacking sleeping bag available right now.

　　Sea to Summit Spark Check 0° Price at REICheck 15° Price at REICheck 30° Price at REICheck 45° Price at REI

　　7.6 How we rate products Specifications Shell Fabric: 10D nylon w/ a PFAS free DWR treatment Available Temperature Ratings: 0, 15, 30 (tested), 45°F Available Sizes: Regular (tested), Long, Double Tested Compressed Volume: 4 L Tested Weight: 1 lb., 1.5 oz. Tested Fill Weight: 9.3 oz. Insulation: 850+ fill RDS certified down Pros Ultralight weight for summer use Comfortable in the upper body Wide range of customization Compatible for couples Cons Bulky #5 zipper and cording Lacking a differential cut Snug fit around the legs Chris Carter When it comes to ultralight and cutting edge gear, some of the bags on our list can be pretty pricey. But for those looking for packability and customization at a great value, the Sea to Summit Spark ($449) line is a worthwhile option. 

　　The technical side is exceptional: RDS-certified 850+ fill down, a PFAS-free DWR treatment, and a well-chosen 10D face fabric that feels like a dream — all combining so you’re snoozing both morally sound and in comfort.

　　The Spark also does a great job of showing off some well-thought-out specialized features, including a hybrid baffling system to limit down migration where it counts, a technically constructed hood that isn’t too big or too small, and a foot box design that ensures you’re not plantar flexing your feet all night. 

　　While it isn’t the absolute lightest bag on our list, like the Rab Mythic Ultra 180, or our top overall choice, like the Therm-a-rest Parsec, it boasts a high degree of customization, from 0-degree to 45-degree options, half zips or full side zips, and the choice of regular, long, or women’s sizing. For those searching for a couple’s compatible bag, the full-length zip options can even zip together to form one large sleeping bag!

　　The Spark is a touch snug around the legs for the sizing, which won’t work for some larger folks, and it lacks a differential cut design, which we find to be an important feature for eliminating cold spots. For those looking for a bit more wiggle room, the Therm-a-rest Quasar is a worthwhile option, and for those that don’t mind spending more, the Western Mountaineering AlpinLite gives the Spark a run for its money.

　　At the end of the day, the Sea to Summit Spark is a well-rounded ultralight bag that won’t let you down.

　　Enlightened Equipment Enigma $295 at Garage Grown GearCHECK PRICE AT ENLIGHTENED EQUIPMENT

　　7.4 How we rate products Specifications Shell Fabric: Ultralight nylon fabric (7D or 10D) Available Temperature Ratings: 0, 10, 20 (tested), 30, 40, 50°F Available Sizes: Short, Regular (tested), Regular Wide, Long, Long Wide Tested Packed Volume: 8.5 L Tested Weight: 1 lb., 3.2 oz — 1 lb., 5.2 oz. Tested Fill Weight: 15.5 oz. Insulation: 850- or 950-fill down Pros High level of customization Superior warmth-to-weight ratio Does a great job of reducing drafts and cold spots for a quilt Cons Pretty long lead times on custom orders (2-4 weeks, sometimes up to 6) Pull cord at neck often gets annoying Chris Carter Ultralight backpacking quilts are gaining in popularity, and the Enlightened Equipment Enigma ($355) is certainly to thank for part of that rise. The Enigma is designed for the dedicated, weight-conscious backpacker wanting the most dialed, no-frills ultralight setup.

　　Having taken both the brands more blanket-like Revelation and Enigma on extended thru-hikes, we feel like the Enigma does a better job of reducing drafts, packs into your bag more easily, and is just a better quilt for backpacking in general.

　　Enlightened Equipment is known for the high level of customization it offers for its quilts, allowing the weight, warmth, size, durability, and style to be perfectly dialed for whatever adventure lies ahead. Check out the fully custom Enigma to find your perfect style. Just beware, these have some long lead times.

　　You can also choose between 7D, 10D, or 20D fabrics for the outside, and 7D and 10D for the inside to adjust the durability of the quilt. We found that a 10D outside and 7D inside held up just fine over months of abuse. The baffles are thoughtfully designed into a continuous U shape which reduces feather shifting, and the stitching between the baffles doesn’t go all the way through the quilt, eliminating cold spots.

　　The quilt also comes with an elastic strap attachment system for securing it to sleeping pads and a cinch cord at the neck to further eliminate drafts. We wish they had put the pull cord on the side of the quilt, however, as opposed to right in the middle above your face, as it often gets annoying while trying to sleep — really one of our only complaints.

　　In short, the Enigma Quilt is a reliable, ultralight, and super warm alternative to traditional sleeping bags while backpacking. If the Rab Mythic Ultra intrigues you, but you cant get past the trim fit, check out quilts like this one. For long thru-hikes spanning months or fast and light forays in the mountains, this thing will keep you toasty without weighing you down.

　　Western Mountaineering AlpinLite $695 at REICHECK PRICE AT BACKCOUNTRY

　　8.4 How we rate products Specifications Shell Fabric: 12-denier ripstop nylon Available Temperature Ratings: 20°F (tested) Available Sizes: 56, 60 (tested), 66, 70 Tested Packed Volume: 5L Tested Weight: 1 lb., 15 oz. Tested Fill Weight: 19 oz. Insulation: 850-fill down Pros Wide girth allows extra layering in very cold conditions Large draft tubes and collar 5 loft of 850-fill goose down Four different lengths available Cons Expensive 12D shell fabric will require a light touch, can snag Chris Carter Read Review: Handmade, 3-Season, Ultralight Sleeping Bag: Western Mountaineering Alpinlite Review The Western Mountaineering AlpinLite 20 ($710) is built to mimic everything fans loved about its UltraLite bag but with the addition of extra shoulder room. Indeed, the size long offers up to 65 inches of shoulder girth, affording a few extra inches over most of the competition at a similar weight — and all trimmed out in some of the nicest materials you can get your hands on.

　　The brand designed the 12D shell fabric to be extra breathable, promoting as much loft as possible from the 1 pound 3 ounces of 850 goose down (thats 5 ounces more than the Feathered Friends Hummingbird 20, for those counting). The result is a finely tuned bag that is super warm and is backed up with a jumbo, 3D-insulated collar that helps seal in as much heat as possible for alpinists and serious backpackers.

　　The larger-than-normal cut is also a step above most ultralight bags, and can accommodate tucking in some clothes or a warm water bottle beside you. We found that this extra space also makes this bag a bit more versatile when it comes to venting, as youve got a bit more room to move around in when youve got the zippers pulled down.

　　This is one of the most expensive bags on our list, but it deserves consideration for those committed to quality. The high loft and down rating may well justify this expense for some, and like Feathered Friends sleeping bags, it should be considered an investment from a boutique gear manufacturer.

　　For most, however, we tend to believe that a more general bag like the Therm-a-Rest Parsec is a better bet. Yes, its 7 ounces more than this bag, and yes, its not quite as warm, but for the extra $225, you start to hit the level of diminishing returns, in our opinion. To be sure, this is one sweet bag — but be sure you really need all of it before pulling the trigger.

　　Consider the AlpinLite 20 if you are ready to spend the money on a quality product from a leader in the industry. Also be sure that you are someone who is very careful to take care of lightweight, sensitive gear. If that’s you, it’s one of the best backpacking sleeping bags money can buy.

　　Rab Neutrino Down Sleeping Bag Check 10° Price at BackcountryCheck 20° Price at BackcountryCheck 30° Price at Backcountry

　　7.2 How we rate products Specifications Shell Fabric: 20-denier Pertex Quantum recycled nylon ripstop with DWR finish Available Temperature Ratings: -8, 10 (tested), 19, 30 Available Sizes: Mens and Women Regular, Wide, Long, Long Wide Tested Packed Volume: 21 L Tested Weight: 2 lbs., 2 oz. Tested Fill Weight: 1 lb., 5.2 oz. Insulation: 800-fill down with Nikwax hydrophobic finish Pros Hydrophobic down Chevron baffles distribute insulation well High down rating Cons Not the most spacious bag Pricey compared to other similar bags Chris Carter Weve come to expect some premium products from Rab, and the bar starts high when we pull their creations out of the box. Consistently offering stellar alpine-ready gear at surprisingly approachable prices, The Mountain People know what we need. Lending credence to this reputation is the sleek and cozy Neutrino 600 ($495) — yet another high caliber, cloud-like bag filled to the brim with water-resistant, sustainably sourced down.

　　Though not the most flashy design, a peak under the hood reveals some unique flairs that bump the comfort and useability of this bed-on-the-go. We loved the chevron-shaped baffles and trapezoid box-wall construction, which seem to stabilize its insulation better than traditional horizontal baffles. This gives it a solid warmth-to-weight ratio but does make for a narrow, somewhat constricting design. Shifting around inside isnt nearly as easy as with other models, and this isnt the best choice for side sleepers.

　　Anti-snag zipper guards afford a silky smooth closure and baffles along the zipper and at the neck seal in precious heat. The stellar neck baffle design is among our favorites, with a contoured, yoke-shaped slot on the front that nestles perfectly just under your chin. Cinch cords help with the full cocooning process. Trust us — youll bemoan having to crawl out of this cushy capsule when nature calls at midnight.

　　While we appreciate the included waterproof stuff sack, we feel it is much too big for how small the bag packs down, and its hard to compress it to its full potential. At just over 2 pounds, the Neutrino 600 isnt the lightest on this list but has an impressive weight for a 10-degree F model. The 800-fill down thwarts chilly shoulder-season temps (or biting winter cold with its -10F option), and its hydrophobic finish shielded by the DWR-coated fabric fends off condensation or light precipitation.

　　This is a fantastic, high-end down bag at more of an approachable price point than others in its class. The design does insist upon a back-sleeping position, which is why it isnt as highly recommended in our opinion, but technical alpinists and serious backpackers on a budget will appreciate what the Neutrino brings to the table. Considering its premium construction, thoughtful feature set, and streamlined silhouette, wed say it punches well above its weight.

　　Backpacking Sleeping Bag Comparison Chart

　　GearJunkies reviewers giving each sleeping bag a proper test; (photo/Eric Phillips) How We Tested the Best Backpacking Sleeping Bags There are a lot of great sleeping bags to choose from and we are here to narrow the field and help you find the perfect one for you — one that fits your budget and your needs.

　　Its not just about putting the gear through a battery of tests to stress it to its limits — although that does occur — its about using the gear the way our readers do.

　　Our Testing Process and Testing Grounds The main pillars of our backpacking sleeping bag test are — you guessed it — backpacking and sleeping. The location, trip type, distances covered, and conditions are always different, however, and we aimed to use these bags as they should: rainstorms included.

　　Weve slept in these sleeping bags at some wild places across the way. From late autumn traverses in the Chugach Range to spring melt tromping in the Sierra, thru-hiking the Continental Divide Trail, and hiding from storms in Iceland — weve gotten around in the testing process.

　　During field testing, we aim to test these bags relative to their stated temperature ratings and track overnight ambient temps to relate to how we slept. We also regulated our sleeping clothing, and standardized our sleeping pads, aiming for as close to fair as we can manage. We compare notes on performance, and when weve got a good feel, we swap bags to form a comprehensive opinion.

　　Our field testing is a rigorous challenge for these bags, and weve gone far and wide to test them; (photo/Nick Belcaster) When we’re testing out in the field, we’re thinking about how comfortable the bag is, whether there are any cold spots, the ease of getting in and out, how durable the fabric is, whether the sizing is appropriate, and sometimes – whether we like the color scheme or not.

　　We’re also logging data with hygrometers, comparing temperature and relative humidity with instruments placed both inside and outside our sleeping bags in real world backcountry scenarios. While this isn’t a perfect practice, it allows us to get an idea of whether ISO/EN ratings are accurate, and gives us the data to compare the performance of bags with the same temperature ratings in head to head matchups.

　　Using a cylindrical compression sack, a ruler, some 20 pound weights, and a piece of wood, we’re also able to maximally compress each sleeping bag to see its peak packability. This involves a quick formula solving for the volume of a cylinder in cubic inches, which is then converted to liters so it can be used as a tool for folks aiming to pack into smaller ultralight packs or fastpacking vests.

　　Our third protocol involves a moisture-resistance test using both a cup of water and a sprayer bottle, and seeing how a sleeping bag performs through both a theoretical downpour and misting. After pouring the cup of water and using a different area to apply three mists, we note our observations over the course of 1 to 3 minutes.

　　When all is said and done, we come away with both expert opinions and hard data – a combo that ensures you’re getting the best sleeping bag recommendation for your backcountry sleep setup.

　　We get technical and measure both ambient and in-bag temperatures on our overnights, allowing us to be a bit more precise in our recommendations; (photo/Ian Atkinson) Our Expert Testers Not only do we have decades of experience among the lot of us, but we are also critical and perceptive to the nuance of the needs of each user. You may not agree with our opinions, but we strive to make our judgments fair and justified. We stick to the same standards and metrics for each product we test.

　　Editor-in-Chief Adam Ruggiero, a seasoned hiker, bikepacker, and all-around outdoorsman, broke trail with this guide in May 2020, wrangling together our initial selection of 11 top-shelf sleeping bags. Tester Chris Carter took over the reins in 2022 and has been poring through online catalogs, bugging the pros, and hustling to gear shows to narrow in on the most current, deserving selection possible.

　　Chris has significant experience cocooning himself in down burritos, having thru-hiked the Triple Crown of long trails in the United States: the Pacific Crest Trail, the Continental Divide Trail, and the Appalachian Trail. He knows the importance of a sound night of sleep on a backpacking excursion and doesnt skimp on any element of his sleeping kit.

　　Buyers Guide: How to Choose a Sleeping Bag

　　The Enigma offers stellar warmth and packability at a super low weight; (photo/Honey McNaughton) A good sleeping bag is a foundational piece of gear for the outdoor enthusiast. Consider where and when you want to use your bag. Are you planning a summer outing at low elevation or a winter getaway in the mountains?

　　Not every bag will cover the gamut of conditions you will encounter in the outdoors, but most can cover a broad spectrum. A cold-weather bag will work in the summer, but nasty, stuffy, sweaty nights will ensue. Just as with any piece of gear, choose the right tool for the job.

　　We utilize five factors to consider when purchasing a sleeping bag: warmth, packed size and weight, materials, extra features, and value. No one bag can excel in all categories without costing you a fortune. Our goal is to direct you toward the perfect sleeping bag for your needs and your budget.

　　Keep in mind that brands often offer multiple sizes in one bag. There will be short, regular, long, left zip, right zip, or a women’s version. Dead air space in a bag creates more air to warm up, creating a colder bag or at least one that requires more heating time. In some situations, extra space is beneficial.

　　For example, in cold environments, it is nice to have a few extra inches in the bottom of the bag to stash clothes to keep warm or a water bottle filled with hot water. Deciding what side you want the zipper on can come down to handedness, connecting to a partners bag, or preferring a certain side to sleep on.

　　Women’s bags often have more space in the hips and extra insulation. Usually, that adds extra weight for the same rated bag in a men’s version.

　　Warmth

　　A warm sleeping bag is a camp comfort game changer; (photo/Honey McNaughton) The International Standards Organization does laboratory testing to attempt to rate sleeping bags scientifically by reducing variables. A mannequin with sensors is placed in the bag to test temperature changes in a controlled environment. Of course, we are not mannequins! Metabolic rates, preference, and tenacity can alter which bag is better for you.

　　Still, the ratings are a great way to compare warmth across brands. We recommend that cold sleepers choose a bag on the warmer end of the spectrum, even for summer camping.

　　The duration of your trip and the variety of landscapes and climates youll experience along the way also play an important role in narrowing in on the perfect temperature rating. If youll be tramping through snow in the mountains and plodding across blistering deserts all in the same trip (and dont plan on changing bags halfway through), make sure to pick a bag that will keep you comfortable in each environment. You dont want to overheat in the desert or freeze to death in the highlands. Find the happy medium that will protect you from start to finish.

　　Sleeping bag liners can help boost the warmth of a summer bag to be suitable for colder temps. This is a possible lightweight solution for long trips like thru-hikes that bring you through a broad spectrum of temperatures. This silk liner from Sea to Summit is one of our personal favorites for this purpose.

　　Packed Size Weight

　　You want to balance weight, warmth, and packability when deciding on the best backpacking sleeping bag for your needs; (photo/Honey McNaughton) Packed size is of particular importance when backpacking. While regular camping sleeping bags focus more on comfort, you want your backpacking sleeping bag to have an appropriate warmth-to-weight ratio for your adventure. The weight and packed size of a bag are directly tied to the materials it is built from. Down always packs smaller than synthetic insulation at the same temperature rating but is, on average, more expensive.

　　Anyone looking to minimize pack weight should consider something like the REI Co-op Magma 15. This bag packs down to 3 L and weighs just 2 pounds, 3.6 ounces. Compare that to the NEMO Forte with synthetic insulation which is much bulkier at over 3 pounds with a similar temperature rating.

　　The ability to pack your bag into the smallest stuff sack possible means more room for gear (or snacks!). The Rab Mythic Ultra 180 is insanely compact and is great for warm summer bivvies when you want to be ultralight or to add to another bag to multiply the warmth. Its a good idea to consider the volume and storage capabilities of the backpacking backpack you plan to use on your excursions before choosing your sleeping bag, as this will be one of the bulkier items in your kit.

　　A size comparison of many of the bags on this list stored in their stuff sacks; (photo/Eric Phillips) Materials and Construction A bags insulating material will greatly alter its weight-to-warmth ratio. The downside of down (ahem) is that if it gets wet, it loses its warming power.

　　Virtually all modern, high-quality sleeping bags (like those in this guide) use a hydrophobic down, such as the NEMO Disco or Therm-a-Rest Parsec. Hydrophobic down requires treating the down material with a durable water-repellent (DWR) product.

　　This chemical treatment coats the down and inhibits moisture from absorbing into it as readily as untreated down. This treatment also allows damp down to dry more quickly. This is not a waterproofing treatment. Hydrophobic down products will do better at resisting water, but they are not impervious to it.

　　Unlike down, synthetic insulation stays warm when wet but is bulkier and heavier than down. If you plan to be in heavy rain or on a raft trip, consider the NEMO Forte. The other benefit of synthetic insulation is that it is less expensive to procure than down.

　　You want your sleeping bag to be made of durable materials for shoving in and out of stuff sacks every morning and night; (photo/Honey McNaughton) As we said before, down is warmer than synthetic insulation gram for gram. As the fill power (also called CUIN) rating for down climbs higher, so does the price. A 950-fill down does a much better job of trapping heat than a 600-fill down.

　　That is not to say that a higher value will be warmer. The amount of insulating material is also a factor. For example, a bag with twice as much 600-fill down can maintain heat as well as a bag with half that much in 950-fill, but it will consequently be markedly heavier.

　　For shell fabrics and liners, most sleeping bags from reputable brands use synthetic materials that repel water and hold warmth when wet. The diameter of the thread itself used in fabrics is measured in deniers. A high denier count correlates pretty strongly with being a stronger material. So, a higher denier rating correlates with more durability.

　　The caveat to all this is that 20-denier Cuben fiber is stronger than 20-denier polyester because the Dyneema is stronger than the polyester fibers at the same thickness.

　　Some bags have a breathable membrane, such as a GORE-TEX shell. Ripstop is a way of reinforcing fabric with heavier threads woven in to resist abrasion and tearing.

　　Durable sleeping bags will keep you warm and cozy for long months on the trail; (photo/Honey McNaughton) Taffeta is among the most common fabric choices to line the inside of a bag. Unlike the coarse feel of ripstop, taffeta has a pleasant silky feel and is more breathable. This makes it an ideal choice as a next-to-skin fabric.

　　Pay attention to the fabric behind the zipper as well. A late-night trip to the bush can cause fumbling and tearing of fabric if it gets caught in the zipper. Top brands will sew sturdier material in the zipper zone to prevent this, but it adds weight.

　　Baffles in a sleeping bag are sewn separations that keep the down in place to prevent it from bunching up. It is important to consider baffle size and placement in a down bag. After years of use, the feathers tend to migrate into clumps. A little care and proper maintenance can prevent this.

　　Finally, draft tubes and collars are insulation-stuffed barriers between you and places that lose a lot of heat. This is in places such as along the zipper or around your neck. These barriers are crucial to keeping cold air out. Draft collars rest on the chest and neck area to keep the heat in the bag from escaping.

　　A comfy sleeping bag makes life better for everyone; (photo/Honey McNaughton) How much can I compress a down sleeping bag? The short answer is more than you probably should. Compressing down feathers damages them over time but they can squeeze down magnificently.

　　We have compressed a -40-degree bag into a 10L compression sack. That is not recommended but if you need space in your pack, you will do whatever you have to.

　　Packing down takes patience. Applying gentle pressure to remove air from between the down can squeeze it into tight spaces. Check with your manufacturer’s listed pack size. This is a good indication of how far to take it.

　　For example, one of our favorite sleeping bags, theWestern MountaineeringAlpinLite, has a 5L listed pack size in the regular length. Compare that to theNEMO Discoat 6.2 L at a comparable temperature rating.

　　When you store your down sleeping bag, always put it in the large provided sack or bag about the size of a 55-gallon trash bag to prolong the life of the down and allow for full expansion while in storage.

　　Down backpacking sleeping bags compress down small, but pack some serious heat when you need them to; (photo/Honey McNaughton) What is a good weight for a backpacking sleeping bag? This is largely dependent on what your needs are. For backpacking, long hikes into a campsite with just a backpack to haul your gear, the general consensus is that you will want a pack under 3 pounds.

　　Ultralight sleeping bags, like theRab Mythic Ultra 180, are measured in ounces, not pounds. Yet, with every ounce you sacrifice, most often you’re losing material.

　　This can mean less durable materials, less size or comfort, and potentially higher prices with more advanced tech. For car camping, weight will really be a secondary concern to comfort — it’s more what will fit in the trunk of your car. In that scenario, the roomyNEMO Fortestarts to look pretty appealing.

　　Should I get a down or synthetic sleeping bag? When it comes to warmth and packability, nothing beats down. That’s not to say that synthetic options aren’t warm or packable — or that someday synthetic insulation might catch up to or surpass down — but down is the hands-down winner for now. Consider the 20-degreeWestern MountaineeringAlpinLitethat packs down to 5 liters.

　　Synthetic bags do have their place, however. By its nature, synthetic is engineered to maintain its performance characteristics when it’s wet. The same cannot be said for down. While synthetic isn’t quite as packable, it has come a long way in becoming a pack-friendly option.

　　Enlightened Equipments Enigma is one of the lighter down options out there; (photo/Honey McNaughton) What is the lightest backpacking sleeping bag? From our testing, theREI Co-op Magma 15andRab’s Mythic Ultra 180are the lightest backpacking sleeping bags we recommend.

　　Is a 20-degree bag too hot for summer? Warmth ratings are a guide, not a rule. The degree listed on a sleeping bag is a measure of a bag’s comfort zone. Typically, a 20-degree bag will keep the average user comfortable at 20 degrees, but we all regulate heat differently.

　　Many bags, like theKelty Cosmic Down 20, feature dual zippers. This allows the bottom of the zipper to be opened as a vent while most of the bag stays zipped shut.

　　If you run cold, a 20-degree bag may feel too cold in 30-degree temps. If you run hot, you can get away with a 30-degree bag in 15-degree weather or below. Keep this in mind if you run hot or cold on either end of the spectrum.

　　A good nights rest starts with a solid sleeping bag; (photo/Honey McNaughton)

　　The Best Backpacking Sleeping Pads of 2025 We tested and reviewed the best sleeping pads for backpacking in 2025. Whether you need an ultralight mat or more insulation, weve got it.

　　The Best Backpacking Tents of 2025 Whether youre looking to spend 100 nights on the trail or stick to a tight budget, weve found the best backpacking tents of 2025.