The Dakine Drafter 10L Hydration Pack meets all your mountain bike backpack needs from hydration to protection in a compact, breathable design. Stay hydrated on the move with the 3-litre Hydrapak reservoir, located on the lumbar for a lower center of gravity, with a high-flow bite valve. Stay cool and comfortable thanks to the air suspension back panel and breathable ergonomic shoulder straps. The organizer pocket features a home for all your tools, replacement parts and necessities. Additional features include spine protection compatibility, an external helmet carry, plus deployable armor carry straps. Dakine Drafter 10L Hydration Pack Features 3L / 100oz Hydrapak® lumbar reservoir w/ quick disconnect High-flow Blaster bite valve w/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 Fleece lined sunglass/phone pocket Internal organizer pockets Magnetic hydration hose clip Reflective logo Dakine Drafter 10L Hydration Pack Specifications 610 cubic inches (10L) 18 x 10 x 6.5 (46 x 25 x 16.5cm) 2.3 lbs. (1.0kg) 400D bluesign® approved nylon ripstop (solids) 600D bluesign® approved Polyester (prints)