100 % waterproof,One handed closing technology for quick and easy drinking.100 % waterproof,One handed closing technology for quick and easy drinking.
It is made of co-polyester, and the lid is made of polypropylene.
Nalgene's newest leak-proof loop-top swings open wide to reveal a contoured, high-low 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.