HydraPak Water Reservoir (1.5L, 2L, 3L) - Hydration Bladder Fits Most Backpacks – High-Flow Bite Valve, Leak Proof, Fully Reversible, and Dishwasher SafeFITS MOST BACKPACKS: Lightweight and low profile the updated Slide Seal Top features a universal pack hanger designed to work with clips, hooks, and loops from a variety of name brand hydration packs. SLIM PROFILE: The hydration bladder has a 3D bottom, fixed Shape Loc baffles and side exit port that increases stabilization during high impact activities. NEW HIGH FLOW BITE VALVE: The lightweight Comet bite valve self seals after each sip and comes