Dakine Drafter 10L Bike Hydration BackpackThe Drafter 10L meets all your mountain bike backpack needs from hydration to protection in a compact, breathable design. Stay hydrated on the move with the 3-liter 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.