Convenient companion: The versatile allrounder with wide hip wings for perfect fit is made for biking, but just as great for school, uni or your daily routine. Air CirculationA constant, free flow of air is enabled by means of the vertical air channel. This ensures optimal ventilation even at high exertion levels including a lot of sweat so as to prevent the chilling of the sensitive kidney area. Air Pad SystemThe Air Pad System with its arrangement of 5 ventilation channels (1 main channel and 4 sub-channels) and 6 strategically positioned 3D air mesh pads offers the optimal combination of a close, load-neutral fit and back ventilation. The shoulder straps with air mesh and large ventilation holes ensure that the pack remains securely in place in any situation, and provide optimal breathability on the shoulders as well.