Shipping Info:


Item #: 332623458

Designed by guides and athletes, the Osprey Mutant 38 fits perfectly between its bigger and smaller siblings; great for long days in the mountains that don’t require setting up basecamp but might require a ledge-bound shiver-bivy. The backpanel sheds snow and easy-to-use ice tool attachment and glove-friendly buckles mean less time fiddling with your pack. With a hipbelt that includes gear loops and stashes behind the pack to provide access to your harness when you need it, plus integrated helmet and rope carry, the Mutant 38 is a nimble and capable alpine machine that fits better and feels more comfortable than what you’re used to. Whether you’re enjoying a North Cascade’s classic or getting showered by spindrift in the Canadian Rockies, the Mutant 38 can do everything you need except belay you on the next pitch.


  • Built to be lightweight and reliable with alpine-specific features such as dual ToolLocks with bungee tie-offs, helmet carry (52L and 38L only), strippable features, rope carry and a narrow profile for efficiency in the mountains
  • Osprey's superior fit makes for efficient and ultimately safer movement in the mountains so that you're never thinking about your pack during runout cruxes through rotten rock or thin ice
  • Removable top lid (for 52L and 38L only), removable suspension (framesheet on 22L, framesheet and/or dual stays on 38L/52L) allow the user to trim weight
  • Snowshed fabric backpanel
  • Dual ToolLocks with bungee tie-offs
  • Front panel daisy chain for additional gear attachment
  • Three-point haul system
  • Internal hydration sleeve
  • Glove-friendly buckles
  • Top or front of pack helmet carry
  • Reinforced A-frame ski carry
  • Dual hipbelt gear loops and ice gear carry attachment


  • Volume: 38L
  • Load Range: 10-40 lbs
  • Weight: 1.3 kg (2.8 lbs)
  • Dimensions: 28.7" x 12.6" x 11.8" (73 x 32 x 30cm)
  • Materials: 210D High Tenacity Nylon, 210D Nylon Honey Comb Contrast Thread, 420HD Nylon Packcloth
  • Vendor Style Number: MUT3856-BLUE