Hydration Capacity: 100 oz (3 L). Total Capacity: 671 cu in (11 L). CamelBak Got Your Bak Guarantee: If we built it, we'll Bak it with our lifetime guarantee. Reservoir Features: Quick Link System, 1/4 turn - easy open/close cap, lightweight fillport, dryer arms, center baffling and low-profile design, patented Big Bite Valve, HydroGuard technology, insulated PureFlow tube, easy-to-clean wide-mouth opening. BACK PANEL: N.V.I.S. HARNESS: Dynamic Suspension with Slider SternumStrap. BELT: Fixed 1 in (25 mm) with cargo pockets. Additional Features: Media pocket, bike tool organizer pocket, stash pocket, four point compression, stretch overflow helmet storage, removable rain cover. Designed to carry: Helmet, multi-tool, pump, spare tube, extra layers, lunch, MP3, phone, wallet, keys.