Race the lightweight road runner amongst our bike backpacks. Because every gram counts when you want to go fast Race and Race X score with a compact secure fit due to the Airstripes system. Features sturdy stay-in-place fit thanks to airy light mesh hip fins attachment loops for glasses on shoulder strap free range of motion guaranteed by ergonomically S-shaped shoulder straps loop for safety light stretch side pockets detachable rain cover hydration system compatible wet laundry compartment chest strap internal mesh pocket outstanding ventilation and compact secure fit due to the Airstripes System zipper pocket on top internal pocket for tools loops for helmet holder accessory Airstripes System Features 3D AirMesh lined shoulder straps. Anatomically formed they guarantee comfortable movement range. The chest strap further secures the fit. Breathable Mesh wings on the hip belt stabilize the load. Two contour-shaped layers of knobbly foam with AirMesh lining and minimal back contact provide maximum airflow. Flexible aluminium stays within the foam profile can be bent to fit the back exactly. Bike I Superbike and Trans Alpine. Two contour-shaped layers of knobbly foam with AirMesh lining and minimal back contact provide maximum airflow.