Mutant 38

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Whether mountaineering in demanding alpine conditions or spending long days conquering multi-pitch ascents, the Osprey Mutant 38 is fine-tuned for vertical ice and steep terrain. Developed with the help of local guides and athletes and honed over years of abuse in extreme conditions, its close-to-body fit and refined feature-set promotes safety and stability in even the worst of conditions. New colors, advanced fabrics and refined features make the latest iteration of Mutant 38 even more formidable than its predecessor, proving that the evolution isn't done yet. The whole Mutant family benefits from the addition of lightweight, recycled NanoFly® and robic fabrics for impressive durability and lower environmental impact than virgin materials.


WARNING for California customers: This product can expose you to chemicals including dimethylformamide, which is known to the State of California to cause cancer. For more information, go to


Pack Volume:
S/M: 2197 cu in / 36 L
M/L: 2319 cu in / 38 L
S/M: 24.8H x 11.81W x 10.24D in.
M/L: 26.77H x 11.81W x 10.24D in.
S/M: 2.516 lbs
M/L: 2.692 lbs
Load Range:
10 - 30 lbs
Main: bluesign®-approved 210D recycled high tenacity nylon, PFAS-free DWR
Accent: bluesign®-approved 210D recycled nylon grid NanoFly®, PFAS-free DWR
Bottom: bluesign®-approved 210D recycled nylon grid NanoFly®, PFAS-free DWR
Key Attributes:
Dual ToolLocks, rope carry, snowshed backpanel, glove-friendly buckles and strippable features.
Developed and tested by athletes and local guides.
A narrow profile, close-to-body carry and Osprey's superior fit makes for efficient and ultimately safer movement in the mountains.
Other Features:
  • Removable webbing gear attachment straps
  • Front panel daisy chain loops, compatible with Voile straps
  • Three-point haul system
  • Snowshed fabric backpanel
  • Dual ToolLocks with bungee tie-offs
  • Internal hydration sleeve
  • Lightweight, glove friendly buckles
  • Rope attachment/internal compression
  • Removable top lid with zip pocket, FlapJacket and stowaway pocket
  • Removable, multi-position helmet carry net
  • Reinforced A-frame ski carry
  • Quick release upper and lower compression straps
  • Dual hipbelt gear loops and ice gear carry loops
  • Reverse-wrap hipbelt
  • Removable Atilon framesheet, dual aluminum stays
Carry Information:
-- Atilon framesheet with dual aluminum stays
-- Snowshed fabric
-- Ridged EVA foam
-- Stretch woven mesh over EVA foam

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