The BC1 is a backpack designed for those all day bike rides. Its flexible Profax PP-frame transfers up to 80% of the load to the hips, while the dynamic FlinkÂ® ball-joint offers practically unhindered freedom of movement to the upper body. Featuring a sleeve for a bladder, an integrated rain cover, helmet stowage, and smaller pockets for organizing your kit, it is the ultimate ergonomic backpack. The carry-system has an adjustable hip belt, regulating fit and ventilation. Available in small and large carry system versions.