Durable and ventilated alpine mountaineering backpack from Mammut, with a range of handy features The Trion Nordwand 38 Climbing and Trekking Backpack from Mammut the definition of a climbing bag. It comes with some great features that are all designed to make your time climbing as hassle-free and enjoyable as possible. The Motion V Frame system a flexible, twistable aluminum frame. On load, weight optimally transferred to the hips, aiding freedom of movement of the upper body and hips. This extremely necessary for alpine climbing and trekking activities ensuring a body-hugging fit for safe load control.The Nordwand built with 100D Nylon fabric with Dobby Ripstop, 15 times tougher than steel, to produce an extremely robust bag that can withstand even the most extreme loads. The back panel and shoulder straps are anatomically shaped and padded for a comfortable fit, whilst super-lightweight and highly breathable 3D EVA foam provides great ventilation for those warmer climbs.Other features that really make this bag stand out as an excellent rock climbing backpack the attachment flap to hold your ropes, two strong ice axe holders, reinforced ski attachment points on the side and a waterproof external zipper pocket.