Stay out for longer when you have your water supply covered thanks to the Camelbak Zoid. This slim pack stows 2 liters of water and you can easily wear it under or?over your jacket. Cold temperatures won't be a problem thanks to the Therminator Harness that keeps your drinking tube safe in an insulated sleeve. And because you never want a cold pack on your back, the Camelbak Zoid Backpack is also made with a Snowshed Back Panel with a DWR finish for added snow protection. QuickLink?? hose system allows for easy removal/replacement of reservoir without having to re-route hydration hose. Crux?? Reservoir features an easy open/close leakproof cap. High-flow hydration line delivers 20% more water per sip. Easy-carry handle makes it easy to hold reservoir while filling. Baffled construction helps reservoir hold shape when full, and prevents contents from sloshing while wearing. Hydroguard?? Antimicrobial Technology ensures fresh-tasting water every sip. Big Bite?? Valve self seals after every drink, additional on/off lever prevents leaks when not in use. BPA, BPS, and BPF Free. Designed for minimal footprint on your back?. Fits?15 - 21 in. torso length. Volume:?3 L. Product weight: 10 oz.. Imported.