The lightweight trekking backpack Aircontact Ultra 45+5 SL from Deuter, made from bluesign-certified main material, offers an excellent weight-to-comfort ratio. This is enhanced by the back system featuring Air Spacer Mesh, which combines three functions to save weight. The adjustable back length, thanks to an innovative hooks and loops solution, provides a precise and back-friendly carrying comfort. Movable VariFlex ECL hip fins and an ergonomic lumbar pad ensure optimal load distribution. The robust ripstop material made from high-performance fibers withstands the rigors of long-distance hiking. Since the carrying comfort of your backpack depends on back length, shoulder width, and body size, Deuter has developed specific SL models. These differ primarily in back length as well as the distance and shape of the shoulder straps compared to other models. Thus, SL backpacks are particularly well-suited for women and teenagers, as well as for slim and shorter men.