The Mammut Trion 50 is an all round mountaineering pack for multi day trips in the Alps and UK mountains. The Trion 50 combines all the features of a Mountaineering pack with some additional ease of use you would expect from a travel pack. Constructed from 210D Cordura ripstop nylon with a super durable 810D Ballistic nylon base the Trion can withstand pretty much anything you can throw at it. As well as the top drawcord entry under the floating lid, there is a large rear access which allows fast access to the entire inside of the pack. This is especially useful when setting up camp or arriving at the hut as it allows you to get to items stored at the bottom of the pack immediately. The back system is made from 3-D EVA foam with stamped air channels for excellent ventilation, both the straps and waist belt are padded for comfort over long days. The shoulder straps also feature mesh pockets large enough for a mobile phone or soft flask. The removable padded hip belt features a mesh pocket on one side and a gear loop on the other. The sides of the pack have mesh pockets for a water bottle or map, while in winter there's a reinforced side strap for carrying skis. On the outside of the pack there are carry systems for 2 trekking poles and 2 ice axes with a pick pocket to keep sharp picks out of the way. Mammut Trion 50 Features 210D Cordura Large rear access with zip Large mesh pockets on the shoulder strap Internal zipper compartment for valuables Rope fixing strap under the flap Trekking pole carrier Super-lightweight, highly breathable EVA shoulder padding Daisy chain loop Lateral compression straps, can also be tensioned at front to carry gear 2 strong ice axe attachments Hydration system-compatible Huge back zipper access to main compartment Zipper pocket on hip belt Reinforced side ski attachment Good ventilation on the back thanks to stamped EVA foam Large zipperfront pocket Detachable hip belt with gear loop Two external pockets on the sides Large mesh pockets on the shoulder strap Fair Wear manufacture Weight:1.55kg Capacity:50 litres Mammut Trion 50