Osprey Mutant Nimsdai 90L Climbing Rucksack

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RRP: £275.00
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All about this product



Designed in partnership with Nepalese mountaineer and Osprey Ambassador Nimsdai Purja MBE, the Mutant 90L Climbing Rucksack is ready to take on the harshest of environments while carrying a significant amount of kit, allowing you to move fast and efficiently in the mountains.

With the same features as you’d expect on the Mutant, such as an ice-tool holder, side ski carry loops and compression straps, keep everything secure. The snow-shedding back panel has a removable frame sheet, while the outer material is highly durable to endure even the roughest exploits and is made from recycled bluesign approved high tenacity nylon and PFC-free DWR treatment that sheds moisture.

Technical details

  • Materials:
    • 10D Nylon High Tenacity Recycled with NanoFly
    • Aluminium stays
    • Bluesign approved
    • Global recycled standard
    • PFAS free
    • DWR treatment
  • Snow shedding backpanel with removable HDPE framesheet and aluminium stays
  • Upper and lower side compression straps with SR buckles
  • Front shield-pocket for snow-shoes or crampons
  • Lid access with under-lid rope carry option
  • SR-buckle release ice-tool holders
  • Side ski carry loop
  • Weight:
    • S/M: 2kg
    • M/L: 2.1kg

Key Features

Volume (l)




Technical features
Stretch, Water repellent, Wind resistant
Closure type
Roll closure


Weight (g)

Other features

Ideal For
Backpacking, Climbing, Mountaineering, Winter Climbing
Product Code
Reviews (1)

User Reviews (1)

About this brand

A couple with Osprey backpacks walking up a rocky hill somewhere in the mountains.
Santa Cruz California 1974. Mike Pfotenhauer sat at his sewing machine with a head full of ideas and a burning passion to build the most innovative backpacks to the highest standard.


One man’s vision has grown into a wide range of Osprey rucksacks and accessories that are being used from the highest mountains to the most remote islands and everywhere between.


With innovation in every strand of each pack and an identity born out of true specialism, Osprey continues that true pioneering spirit today.

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