Osprey Mutant 38

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Quick overview

The Mutant is a reliable, intelligently-featured climbing pack for year-round ascents.

38 L / 1.28 kg


Super light, flexible, seasonable and seasonally versatile you can rely on this perennial climbing partner. When making cold-weather ascents, you'll appreciate the snow-shedding fabric backpanel, side ski carry loops and dual ToolLock ™ system which allows quick and secure ice ax attachment. The main entry to the Mutant 38 is through a floating and removable top member, which means you can overload your pack as a packhorse or remove the member for clear head clearance and lighter weight. Lesser climbing packs have minimal weather protection and compression when in this mode, but not the Mutant 38. Use the built-in FlapJacket ™ that provides weatherproof closure; it keeps your gear fully compressed. Also included in the top pocket is a rapid deployed mesh helmet storage pouch. The reverse-wrap hipbelt with integrated gear loops provides your choice of comfort, minimalism or gear racking options. Rock Climbing in the summer or ice climbing and ski touring in the winter, Mutant 38 will be your perfect partner in climb.


  • Compatible with Hydraulics ™ and Hydraulics ™ LT Reservoir
  • Dual front daisy chains offer flexible attachment options
  • Dual ToolLock ™ for ice ax attachment
  • FlapJacket ™ top cover for use without member
  • Glove friendly buckles
  • Integrated gear loops on hipbelt
  • Integrated ski / climbing helmet storage
  • Internal hydration sleeve
  • Internal key attachment clip
  • Internal top load compression strap
  • Reinforced 3-point haul system
  • Reinforced base
  • Removable HDPE framesheet with T6061 aluminum stay
  • Removable top member with dual compartments
  • Sewn in hipbelt, reverse wrap stowable
  • Side ski carry
  • Snow-shedding fabric backpanel
  • Sternum strap with emergency whistle
  • Top member access
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