Osprey Mutant 38 Pack

Color: Mars Orange
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Fine-tuned for vertical ice and steep terrain, the streamlined Osprey Mutant 38 pack secures your gear and fits close to the body for more efficient movement in the mountains.


  • Updated with lightweight, recycled NanoFly™ and Robic fabrics for heightened durability and lower environmental impact than virgin materials
  • Dual ToolLocks™ with bungee tie-offs provide quick and easy access to your ice tools
  • Reinforced A-frame ski carry; rope-attachment carry system with internal compression; removable multiposition helmet carry net
  • Webbing gear attachment straps are removable; front panel daisy chain loops are compatible with Voile straps (not included)
  • Quick-release upper and lower compression straps; lightweight, glove-friendly buckles
  • Reverse-wrap hipbelt; dual hipbelt gear loops and ice gear carry loops
  • 3-point haul system
  • Removable top lid with zip pocket; FlapJacket and stowaway pocket
  • Snowshed fabric back panel; stretch woven mesh over EVA foam
  • Internal hydration sleeve (reservoir not included)
  • Developed with the help of local guides and athletes; honed over years of abuse in extreme conditions


View all Osprey Climbing Packs

Technical Specs

Best Use


Bag Style


Frame Type

Internal Frame

Gear Capacity (L)

S/M: 36 liters

M/L: 38 liters

Gear Capacity (cu. in.)

S/M: 2,198 cubic inches

M/L: 2,319 cubic inches



Hipbelt Pockets


Fits Torso Length (in.)

S/M: 14-17 inches

M/L: 17-21 inches

Fits Waist/Hips

S/M: 26-45 inches

M/L: 28-50 inches


Main: 210-denier high-tenacity recycled nylon (bluesign®-approved); accent and bottom: 210-denier recycled nylon grid NanoFly (bluesign® approved)

Frame Material

Removable Atilon framesheet

Number of Stays

2 aluminum stays

Suspended Mesh Back Panel


Pack Access


Number of Exterior Pockets

1 + main compartment


30 x 14 x 12 inches




S/M: 2 lbs. 8.3 oz.

M/L: 2 lbs. 11 oz.


Contains materials that meet the bluesign® criteria

Contains recycled materials

3 reviews with an average rating of 5.0 out of 5 stars

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