Eddie Bauer Unisex-Adult Alchemist 40/55 Pack, Dk Smoke Regular ONESZE Compression-Molded Back Panel: Comfort even when fully loaded Capacity: 40L to 55L / 2,441 cu. in. to 3,356 cu. in. Removable BFF Pad: Use as bivi or first aid support Quick-Release Tool Straps: Hold ice axe securely Delrin Internal Frame: Integrated tiedown points