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. FEATURES VariSlide System Round profile frame made of permanently elastic spring steel Active Comfort Fit VariFlex System Pull-forward hip fins Adjustable sternum belt Height adjustable lid Load adjustment strap Ice Axe Attachment SOS label Separate bottom compartment with removable base Compatible with 3.0 liter drinking system/bag Stretch side pockets Rain Cover Inside compartment to keep your valuables safe Elasticated inner compartment for storing wet/sweaty clothing, water reservoir, etc. Lid compartment Front zip access Attachment loops for the helmet holder Hip fins with two zippered pockets Front Stuff Pocket Compression straps Key clip Name tag inside Fastening loops on lid 50% recycled PFC free 210D PA RECYCLED, 600D PES Weight 4.41 lbs Volume 45 + 10 liters Dimensions 28 / 13 / 9.8 (h x w x d) in Recommended load 18 - 33 lbs Back length 14 - 22 in Body height 62 - 70 in