Osprey worked with local Colorado guides and climbing athletes to design a lightweight, streamlined pack for done-in-a-day alpine missions: The Mutant 22 features integrated rope carry, a wide-mouth zippered opening, customizable options for carrying crampons/other items on the front of the pack, and a webbing hipbelt that won't get in the way whether worn, buckled behind you, or removed. Other details include glove-friendly buckles, a secure and easy-to-use ice tool carry system, and durable fabrics to ensure that your pack can last as long as you can, no matter your objective.. . Main: 210D High Tenacity Nylon. Accent: 210D Nylon Honey Comb Contrast Thread. Bottom: 420HD Nylon Packcloth. Form Follows Function: Built to be lightweight and reliable with alpine-specific features such as dual ToolLocks 845136075146 33146000006 10001647