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　　Water is heavy—one liter weighs 2.2 pounds, and four liters weighs almost nine pounds. Even the best-designed hydration packs or vests, waistbelts, or handheld carrying systems don’t make water any less heavy than it is. A good system does, however, distribute that weight effectively and allows you to carry what you need comfortably. 　　Figuring out what amount of fluid you...

　　There’s a running pack for everyone these days. Are you a trail aficionado, or more of a road-only type? Hungry for vert,  or like to go long?  From fast-and-light styles to options that hold everything you could possibly want, there’s a pack that will meet your needs. 　　The Winners at a Glance Best for All-Day Outings: Rab Veil 12 Best...