Ski mountaineering, ice climbing, and rock climbing, Osprey thought of it all when developing the new top loading Variant 37 pack for vertical endeavors. Lightweight suspension consists a removable HDPE framesheet and a single aluminum stay. Fixed Stretch comfort shoulder harness provides superb carry with rolled seams for added comfort rescue whistle is incorporated into sternum-strap buckle. 3-D contoured EVA hipbelt is removable and stowable to stow while climbing, tuck hipbelt out of the way by threading webbing and buckles through tool holster slot. Thermoformed, contoured back panel provides carrying comfort and snow shedding capabilities. Dual, adjustable tool bungee Y-clips stow ice tool shafts quickly, with corresponding holsters securely attaching ice tool head, including leashless ice tools. Removable top pocket has a zippered pocket underneath and an extendable spindrift collar to keep snow out of the pack collar can be rolled up. Reinforced front crampon shield compression pocket provides secure storage and easy access. Pack includes protection pockets for easy storage and quick access to wands, probes and pickets. 3-point haul system, consisting of grab handle and 2 reinforced loops located at the top of pack, facilitate big wall hauling. Internal sleeve and drink tube exit port accommodate a 3-liter reservoir sold separately for hydration on the go. Side compression straps cinch down loads for jostle-free carrying dual ski carry loops.