Smart design, meet peak performance - also known as the Shape-Shift Reservoir. Our time-tested creation for hydration on the go, it can take a serious beating, it fits nicely in most packs and it's fully reversible for easy cleaning. Durable, dependable form and function.Features: Performance Hydration For: Hiking, Mountain Biking, Skiing & Snowboarding Adjustable Baffle: A removable baffle maintains a low-profile when filled and increases stabilization during high impact activities High Flow: Engineered with updated high performance features and an enhanced design for 20% more flow Easy to Clean: Fully reversible for easy cleaning and drying, easily turns inside out Plug-N-Play: Easily disconnect the drink tube (an auto shutoff valve prevents leaking) and remove the reservoir from your pack for convenient refilling Capacity: 2 L / 70 fl oz unlocked, 1.5 L / 50 fl oz locked Dimensions: 340mm/13.3" X 165mm/6.4" Weight: 141 g / 4.9 oz