The Jack Wolfskin Athmos Shape 28 hiking backpack is a sporty and well-fitting backpack equipped with the innovative AEROSHAPE back system. The back system has an S-shaped design that ensures a close fit, full contact and optimal freedom of movement. The soft EVA foam on the back is equipped with large ventilation holes for better climate comfort. Thanks to its innovative one-piece construction, the back system has the added benefit of reducing production waste to an absolute minimum. The air mesh is completely recycled, as is the main material and lining. * volume: 28 L * dimensions: approx. 52 x 26 x 29 cm * Green Button certification, PFC-free * with recycled materials * weight: 800 g * main material: 100% polyamide * lining: 100% polyester * bluesign® - protection and environmental safety during the production process * main pocket with two-way zipper, inside compartment for water bag with outlet (water bag not included) * two front zippered pockets * elastic bands in the front for trekking poles * side mesh free-access pockets * pocket for zip with integrated raincoat * flexible AEROSHAPE system keeps the backpack very close to the body without interfering with your freedom of movement. A ventilation channel and breathable back padding keep your back cool as you move. * breathable height-adjustable shoulder straps * height-adjustable chest belt * reinforced waist belt with zipped pocket * loop for easy carrying in the hand * reflective elements