Deuter Race X Biking Backpack with Hydration System Ripstop / Nylon Imported ENGINEERED WITH INNOVATION - Deuters ultralight Race X bike pack brings together all around versatility and advanced ergonomics to deliver optimal comfort and performance through anatomically-sound construction; Designed to keep the load close to the body this pack distributes weight effectively and features mesh shoulder straps for superior ventilation OPTIMAL AIRFLOW - Deuters Airstripes System is secure and snug, while offering effective ventilation; 2 contoured, air-channeled foam profiles are encased in a breathable Wide AirMesh lining that reduces contact with your back; A channel between the pads pushes warm air away and draws fresh air in, keeping you cool through your ride; Adjustable mesh hip fins pair extra ventilation with optimal fit STORAGE OPTIONS - The expandable Race X keeps all your essentials well-organized; Large, zippered main compartment keeps your essentials accessible; Features a secure internal compartment for valuables and mesh pockets on the sides; Small zippered front pocket is just right for storing maps; Compatible with 2- or 3-liter reservoir (included) QUALITY CONSTRUCTION - Made from Hexlite 100 and Ripstop 210, the Race X cycling backpack with hydration system delivers lightweight, high-performance durability; PU coating makes this backpack water- and abrasion- resistant, ensuring itll work as hard as you do; Included reservoir features no-drip technology, antimicrobial Grunge-Guard lining, and is BPA-free SPECIFICATIONS - This 12- to 15-liter adjustable volume pack comfortably carries up to 12 lbs; Features 3-liter reservoir, brightly colored detachable raincover, loops for helmet holder (sold separately), and 3M reflectors for greater visibility while cycling; Weight: 1 lb 4 oz. Dimensions: 17 x 10 x 7 in.