With a robust construction, gear attachment points, and plenty of room for extra layers, the Mammut Trion Nordwand 28L Backpack is ready for our ski tours, climbs, and mountaineering trips. Designed with input from Mammut's top alpine athletes, the pack is comfortable and feature-loaded. The anatomically shaped hip and shoulder straps are padded for a soft carry, while the roll-top closure keeps gear protected from the elements and allows us to create a more compact carry on shorter missions.