Deuter Trail 16 SL - The reduced contact surface and large ventilation channels of the Deuter Airstripes back system combined with perforated shoulder straps and hip fins ensure maximum airflow and even weight distribution – for a snug, secure fit over any terrain. The flat-format lid allows space for the head to move, even with a helmet on. Loops on the shoulder straps keep via ferrata set carabiners close at hand. And thanks to a large front zipper opening and side pockets, equipment and gear are always easy to access.