The Big Zip™ SL reservoir is the most finely-tuned hydration reservoir made. Nothing makes staying hydrated easier and, at the end of the day, that means a better day.
Proprietary dual-layer film features a rugged exterior and a BPA- and taste-free lining.
Wide, BigZip™ opening swallows drink mixes and ice cubes easily and makes filling, cleaning and drying a snap.
Secure SlideLock™ closure with carry handle ensures an easy, leak-free seal
All-natural SlimeGuard™ antimicrobial treatment helps keep it clean and taste-free.
Quick-Disconnect drink tube lets you leave hoses routed in packs for easy filling.
Ergonomic 90-degree shutoff valve for easy drinking.
HyperFlow™ bite valve features two-piece construction for easy cleaning.