If going vertical is what you love, the Osprey Mutant 38 Backpack is your go-to pack. After extensive feedback and thorough testing, Osprey designed the Mutant series specifically for rock and ice climbers and it's absolutely brimming with features to help keep your climbing equipment organized and safely stored. Where do you even start? First off, the pack is made of sturdy, high denier nylon and polyester to withstand abrasion from metal edges. The Mutant 38 Backpack is roomy enough to store crampons, climbing rack, harness, rope and there's an extendible lid for fitting even more. On the exterior, there are plenty of haul loops for your ropes and axes, a reversible waist strap to use when you're wearing a harness and a contoured back panel that staves off snow and moisture. Whether you're off on a day of casual cragging or a multi-day mountain trip, you'll find the Osprey Mutant 38 a very worthy companion.