The reduced contact surface of the deuter Airstripes back system and airy, quick-drying Air Spacer mesh against the back combined with perforated shoulder straps and hip fins ensure maximum airflow, even weight distribution and a snug, secure fit on multi-day via ferrata (fixed-rope) routes. Loops on the shoulder straps keep via ferrata set carabiners close at hand. And a large zipper opening, stretch side pockets and a separate bottom compartment mean your gear is organized and easy to access.