Stay hydrated more easily with the Big Zip hydration system.  The unique wide-mouth opening makes filling, cleaning and drying a breeze, and allows for easy adding of drink mixes or ice cubes.  The secure closure with carry handles means an easy, leak-free seal every time.

Features:

• 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.

Specifications: