Ergonomic S-shaped shoulder straps and adjustable sternum strap. Padded back with superior air-flow system supported by "BEFA". 20mm PU back panel for air-breathable mesh with thick open cell foam for softness and comfort. Torsionally shaped aluminum frame to support load and balance. Back Length Adjustment system for adjustable sizing to fit all sizes. Padded waist belt, improved sleeping bag compartment with zipper, and hiding rain cover on the bottom to keep you gears dry. Dual side pockets to hold extra gear and organization. Compression strap on both sides.