Long distance hikes are exactly your thing? Then the Futura Air Trek SL, which offers maximum comfort on long tours, is your ideal companion. The VariSlide system allows infinite adjustment to any body size. The moveable VariFlex ECL hip fins with ergonomic padded inserts make for comfortable wearing. The Aircomfort Sensic mesh back system keeps you optimally ventilated. In order to offer you maximum space and organization possibilities for your equipment, there is a side bellows pocket and a height-adjustable lid ( 10 L) in addition to the large front access.