Platypus Big Zip EVO Hydration Reservoirs SystemPremium taste-free hydration reservoir with 50% faster flow rate.Introducing the Big Zip EVO-the latest evolution in taste-free hydration. Delivering an extremely high flow rate, self-sealing HyFLO bite valve, large drink tube, simple one-handed filling, easy cleaning, fast drying, quick access drink tube disconnects, leak-proof shutoff valve, and more, the Big Zip EVO is a top pick for hikers, backpackers, travelers and mountain bikers. The Big Zip EVO is available in 1.0L, 2.0L, 3.0L & Lumbar 2.0L.Features: *Secure SlideLock: Slides both directions to easily open, securely close and fill reservoir. *Handy Pincher Grip: Allows for easy one-handed filling. *High Mount Quick-disconnect: Instantly stops flow and offers reliable stowing. *Leak-proof Shut-off Valve: Offers fast, easy access&mdashno more digging down in your pack. *Semi-rigid Center Baffle: Offers low-profile support and makes for easy cleaning and drying. *HyFLO Self-sealing Bite Valve: Improves flow along with new, larger 5/16" drink tube. *Funk-free: Embedded Silver-ion protects clean water from mold & bacteria. *Clean Taste Guarantee: All materials are certified food-grade, BPA-, BPS-, phthalate-free and taste-free, guaranteed.Specs: 1.5 liter 2 liter (Lumbar) 2 liter 3 literCapacity (Standard) 50 fl. oz 70 fl. oz 70 fl. oz 100 fl. ozCapacity (Metric) 1.5 liters 2.0 liters 2.0 liters 3.0 litersWeight (Standard) 5.6 oz 5.4 oz 6.0 oz 6.5 ozWeight (Metric) 0.16 kg 0.15 kg 0.17 kg 0.18 kgWidth (Standard) 8.5 in 14 in 8.7 in 9.0 inWidth (Metric) 21.6 cm 35.6 cm 22.1 cm 22.9 cmLength (Standard) 13.0 in 8.7 in 15.0 in 17.2 inLength (Metric) 33.0 cm 22.1 cm 38.1 cm 43.7 cmHeight (Standard) 0 in 0 in 0 in 0 inFilm Polyurethane / PolyethyleneBite valve material Silicone Silicone Silicone Silicone