The Airstripes back system with low back support and large ventilation channels as well as the perforated shoulder straps and hip fins with pockets ensure optimum air circulation, weight distribution close to the body and therefore a compact fit, even for tall people (from 185 cm). The flat lid design offers good headroom - even with a helmet. Thanks to attachments on the shoulder straps, the carabiners for the via ferrata set are always within easy reach and the equipment is quickly to hand thanks to the large zip front access and side pockets.