The Dakine women's Drafter bike backpack is a full volume pack built with a women's specific fit. The 3-liter hydration pack stows in the lower lumbar offering a lower center of gravity for better balance. The pack features a cooling air suspension back panel and breathable ergonomic shoulder straps to minimize hot spots. Stowage includes quick access side pockets, dedicate fleece-lined sunglass-phone pockets, an internal organizer pocket, plus external helmet and protection carry and DK Impact Spine Protector compatibility. The women's Drafter carries a generous load in a compact women's specific design. Features: 3L - 100oz Hydrapak lumbar reservoir with quick disconnect, high-flow Blaster bite valve with shut-off, Air Suspension backpanel, DK Impact CE-certified Spine protector compatible (not included), breathable ergonomic shoulder straps, full face or trail helmet carry, deployable armor carry straps, quick stash zippered side pocket, fleece lined sunglass-phone pocket, internal organizer pockets, magnetic hydration hose clip, reflective logo, limited lifetime warranty. Dimensions: 854 Cubic inches (14 liters), 18 x 11.5 x 8'' (46 x 29 x 20cm), 2.5 lbs. (1.1kg). Material: Polyester, Nylon Ripstop.