Light without sacrificing fit and comfort, the Osprey Aether 60 Backpack is newly updated for backpacking and mountaineering pursuits. You will love the custom moldable hipbelt and the clean asthetic appeal of this pack. The HDPE framesheet provides Safe guardion for your back and Strengths heavy loads.The top pocket can be removed and converted into a lumbar pack using the IsoForm hipbelt on the pack.The Aether 60 holds 3400-3800 cu in depending on the size selected.(S,M,L) The Aether 60 features a reservoir comptabile dual exit system for you hydration necessitys.(The reservoir is sold separately)