"Built to go the distance, the streamlined and comfortable Osprey Berm 12 Bike Hydration Pack keeps essential water at the ready and secures your on-the-road must-haves. First and foremost, this pack comes with a Hydraulics LS 2.5L Reservoir, along with an adjustable sternum strap and a magnetic bite valve attachment. The pack's easy-access S-shaped zipper makes refilling the reservoir simple. While you travel, a ventilated bike-specific harness combines with a mesh-covered, ridged-foam AirScape Backpanel, and removable webbing hip belt. Together, this trio provide riding stability and a comfortably close fit. This biking pack also boasts a generous yet low-profile main compartment, a front shove-it pocket for quick-stash items, a zippered front pocket with key clip, and internal mesh drop-in pockets. External compression straps secure a full-face helmet. Reflective details and a blinker light attachment (light not included) enhance riding safety. All fabrics used to create the Osprey pack are bluesign approved. Main fabric is 300-denier 100% recycled polyester, lining is 70-denier 100% recycled nylon, and the mesh backpanel and harness are 100% recycled polyester. Imported. Reservoir compartment with easy-access S-shaped zipper Includes Hydraulics LS 2.5L Reservoir Adjustable sternum strap with magnetic bite valve attachment Generous, low-profile main compartment Front shove-it pocket Internal mesh drop-in pockets Zippered front pocket with key clip Compression straps Reflective details for safety Blinker light attachmentSpecs: Volume: 732 cu. in. / 12L Dimensions: 16.9""H x 9.1""W x 9.1""D. Weight: 1.44 lbs."