This 42L backpack with an 8L extension is designed for multi-day alpine expeditions. It features a women's SL fit with a shorter back length and ergonomic shoulder straps. The Alpine Back System provides stability and comfort during technical climbs. Detachable Vari-Flex hip fins allow freedom of movement and reduce weight. A J-shaped front zipper offers quick access to the main compartment. The stowable rope strap and enhanced gear attachment systems improve functionality.