Osprey Mutant 28L Day Pack

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Item #: 331645996

The Mutant 28 is a top loading bucket style lightweight pack designed specifically for the alpine climbing/ice climbing minimalist.


  • Adjustable, removable one piece side compression/retention straps with upper side quick release buckles provides load stability and external carry options
  • Reinforced A-frame ski carry loops work in conjunction with compression/retention straps to provide stable A-frame ski carry
  • Stowable, removable stretch mesh helmet carry system provides stable carry of helmet when not in use
  • Dual ToolLocks™ work in conjunction with bungee tool tie-offs to provide secure and easily accessible ice tool carry
  • Multiple front panel webbing loops provide ideal attachment points for crampons and other needed gear
  • Large Zippered Top Access - Zippered, wide mouth bucket load top access provides easy access to the pack’s internal contents
  • Interior Slash Pocket - Interior mesh slash pocket keeps smaller gear organized
  • Minimal Padded Hipbelt Wings - Minimal padded hipbelt wings include gear loops for quick rigging
  • Rope Compression - Integrated rope compression strap keeps your cord secure


  • Volume: 28L
  • Weight: 2.16lbs. / 0.98kg.
  • Dimensions: 24 x 12 x 10" / 60 x 30 x 25cm.
  • Load Range: 25-40lbs. / 11-18kg.
  • Fabrics: Main (210D Nylon Dobby) Accent (210D Nylon Triple Ripstop) Bottom (210D Nylon Triple Ripstop)

Shipping Info:

  • Leaves the warehouse in 1-7 business days depending on order volume.
  • Items may be returned within 60 days of the order date to an Atmosphere retail store or an Atmosphere warehouse. Items must be returned unused/unworn and electronics unopened. See Online Return Policy and Return Instructions for more information.
  • Note: Shipping restrictions may apply based on location and product size.


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