Hydrate on the move with the Platypus® Hoser™ 3.0L Hydration Reservoir. This hydration reservoir features a lightweight construction that fits universally in almost any pack. A hydration hose features an easily accessible hang loop with a Hyperflow™ bite valve that makes drinking on the go easy. The Hoser Hydration reservoir holds 100 oz. of tasteless water and a screw-top closure holds tight for durable use.