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Osprey - Mutant 38 Climbing Pack


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Osprey - Mutant 38 Climbing Pack


The result of extensive testing and feedback from the vertical world, the Mutant 38 provides a simple, strong, lightweight solution for short alpine adventures or multi-day mountain trips.  Minimalist without being minimal in carry or function, this pack allows you to focus on what's beyond and above, not what's on your back.

Alpine endeavors 

The results of extensive testing and feedback from the vertical world, the Mutant 38 provides a simple, strong, lightweight solution for short alpine adventures or multi-day mountain trips.

Key Fabrics:

  • Armourlite 420D
  • Armourguard 900D

Stripped Weights:

  • Small: 0.94 kg
  • Medium: 0.95 kg
  • Large: 0.96 kg



'Reverse Wrap' ErgoPull Hipbelt

Secures the hip-belt out of the way whilst wearing a climbing harness.

3-Point Haul System

Allows secure wall hauling

Axe Loops and Gorilla Grip Patch

Allow for attachment of either technical/non-technical ice tools, the Gorilla Grip patch boosting durability against sharp ice picks.

Floating/Removable Lid

Allows the Mutant 38 to increase in capacity to a maximum of 48 litres, or shed overall pack weight when removed.

Hydration System Compatible

Internal hydration sleeve with hose port.

Lid Pockets and Spindrift Collar

External pocket's circular profile prevents equipment/accessories finding their way into the far corners of the pocket, whilst the internal pocket keeps small items handy.  Removable spindrift collar provides protection from the elements and extra retention for rope carrying.

Mutant backpanel

The Mutant 38 features a removable foam HDPE framesheet / tri-fold bivy pad.

Removable 3-fold Bivi Pad

Easy remove/replacable 3-fold bivi pad for super-light alpine use or as a simple sit mat.

Thermoformed EVA backpanel

Thermoformed EVA foam maintains ventilation and minimizes moisture absorption whilst a lightweight, removable framesheet helps stabilize the pack when loaded.


Rapid, easy and removable load compression/adjustment.  Easy installation of sleeping-mats, poles and skis.  Once adjusted, excess webbing can be stowed in teh Mutant's wand pockets.


Load Range

The green to yellow zones represent the recommended load range for this pack.

25-35 lbs.


Volumes and Weights
US and International weight and volume specifications

Size cu. in. liter lbs/oz kg.
S 2136 35 2/13 1.28
M 2319 38 2/15 1.33
L 2502 41 3/2 1.42

Dimensions are shown as length (height) x width x depth
In: 31.5 x 14 x 11.5
Cm: 80 x 35 x 29


About Osprey:

Osprey design and manufacture high quality and innovative backpacks, daypacks, travel packs, bags and accessories for hiking, trekking, mountaineering, mountian biking, trail walking, urban use and travelling.
Osprey was founded in 1974 by Mike Pfotenhauer and for a long time Osprey has set the standard in pack design and comfort.
Some of the Osprey employees are based at their headquaters in Cortez, South Colorado. Located in a mountainous and rugged landscape, it is the perfect testing ground for many of their designs. They also have a design studio in Mill Valley, California.
The rest of the team, often including Mike Pfotenhauer, founder and head designer, are base in Ho Chi Minh city vietnam. Here Osprey design and manufacture their packs to their exacting standards. They have the ability to ensure fair labour standards and have face to face relationships with the factories that build their packs.
Osprey's mission is to create innovative high performance gear that reflects their love of adventure and devotion to the outdoors.  Osprey succeed when they meet the demanding expectation of their most discerning customers and they are proud to use Osprey's packs. 


SKU ospmut38
Brand Osprey
Shipping Weight 4.0000kg

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