HydraPak Velocity Hydration Reservoir - The Velocity is our lightest reservoir series. Balanced and comfortable, there's a size to fit any adventure - hike, bike or run. The minimalist design and ultralight materials shed weight, the Comet bite valve delivers flow, and the wide opening makes adding ice easy. Our Plug-N-Play connector quickly separates the tank from tube for filling and cleaning. Features Grab Tab; Lightweight; Plug N Play System; Beyond Lifetine Guarantee;