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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.