Proven backpack design technology meets pedal power functionality in the Deuter Bike One 18 SL Hydration Pack for women. This hydration pack has the right amount of volume to keep the essentials at hand while you are biking, hiking or skiing and accommodates up to a 2-liter hydration reservoir. The pack's Slimline (SL) design caters to a woman's body making for a more comfortable, ergonomic fit, so you can pedal longer stay on the trail. The extensive features list includes a built-in rain cover, Airstripes back venting system, multiple organization pockets, mesh side pockets, a helmet carry system and a removable sit pad. The main compartment stows food, clothing layers and a spare tube and pump with ease. Hike light or extend your mountain bike range with the ergonomically designed Deuter Bike One 18 SL Hydration Pack.