Shimano Unzen U10 10 Litre Volume Hydration Pack - 2 Litre Bladder; Lightweight, sleek, and crafted to fit your natural riding position. Shimano's ACCU3D series is precision-engineered to support a smoother ride. Using innovative materials and accurate 3D pattern technology, Shimano shapes each part of the bag to create a body-hugging fit that stays molded to your back. No moving around. No loose straps. You'll hardly know it's there. The aerodynamic and form-fitting design puts less strain on your body, so you can put more energy into your ride. ACCU3D by Shimano-dedicated cycling bags for the dedicated rider.
Conventional backpacks have the shoulder straps coming right over the pectoral muscles. Because these muscles are used quite intensively while riding your mountain bike, the placement of conventional shoulder straps is very restricting. The construction of the Rider Fit Cross Harness is specifically designed to power an aggressive off-road riding style. The harness belts are positioned right in the center of the pectoral muscles solving the restriction of movement caused by conventional shoulder straps. Our Cross Harness ensures more energy for the pectoral muscles while climbing and descending, resulting in a smoother ride. Furthermore this structure eliminates the need of a waist belt, providing free, unlimited breathing from the stomach.