Along with a roll-top opening and a roll-closure sleeping bag compartment, you’ll find a front pocket for clothing, a top pocket, and compression wings with their own pockets for even more storage options. The front pocket, hipbelt pockets, and water bottle pockets are made from stretch mesh, and an external loop and fob offer dedicated places for your ice axe and keys. The PK 50 is hydration compatible, with carrying comfort provided by the HDPE frame sheet, single LightBeam aluminum stay, and stabilizer straps.