New model for this year (Do not check this option if this model was listed as new in last year's Gear Guide)Deuters Guide 45+, is a high performance alpine pack for mountaineering, climbing and snowsports that require excellent load carrying ability, gear access, and flexibility. The Guide 45+ packs utilizes a low profile aluminum X- frame back, a height-adjustable lid, bottom compartment, side access zipper, lid pocket, snow skirt, combination ski and compression strap system, crampon attachment straps, gear loops, 2 or 3-liter hydration compatible, and ice axe loops. The Guide packs utilize Deuters Alpine-Back-System and Vari-Flex hipbelt. This system utilizes two padded foam stripes that provide carrying stability and comfort with "chimney" effect ventilation between the stripes. The breathable 3D Air Mesh is used on all points of contact, and is very durable. The Guide 45+ also features a dividable main compartment for separate sleeping bag and gear storage.