Nalgene's 24 oz On-The-Fly bottle has a leakproof loop-top that swings open wide to reveal a contoured, high-flow drinking spout that's easy to fill at the fountain or sink. One-handed push button for easy open/close; locking bail for ultimate insurance against leaks. Sustain bottles are made with material derived from 50% plastic waste. Each bottle is created from resin powered by next generation recycling technology that transforms plastic destined for landfills into high-performance bottles.

　　-- Dishwasher safe

　　-- BPA free

　　-- Made in the USA

　　Nalgene is in the process of transitioning logos, which means your bottle may or may not have the Sustain logo. Both types are the Sustain bottle.