Big Zip Evo

As the newest evolution in taste-free hydration, the Big Zip EVO delivers a significant 50% increase in flow rate from its predecessor, so you feel satisfied with less slurping. Makes a great option for backpackers, hikers and mountain bikers. The silver-ion in the materials keeps the reservoir fresh and bacteria-free.

• Secure zip-seal for easy opening, closing and filling
• Pincher grip helps with one-handed filling
• High-mount quick disconnect is easy to reach when the reservoir's in your pack
• HyFlow bite valve improves flow
• Shut-off valve is leak-proof and ideal for stowing
• Easy to clean, thanks to the wide opening and rounded corners
• Embedded silver-ion protects clean water from mold and bacteria
• Semi-rigid baffle helps keep reservoir open to help it dry faster and with less fuss
• All materials are certified food-grade, BPA-, BPS-, phthalate-free and taste-free, guaranteed