T3 Tri Active Adjust backrest for a perfect fit. Floating lid, load stabilization band and lid attachment points. Waterproof fabric with integrated waterproof rain cover. High quality No.10 nylon zippers. Double subjects with drawstring wall. Inner and outer pockets for the lid. Large elastic spandex stretch front and side pockets. Bellows side pockets and side compression straps. Large padded waist belt with pockets. L 'shaped front zipper. Open attachment loops for ice axes and hiking sticks. Pole Park function for stowing hiking sticks. 65 liters volume.