New Mutant Nimsdai 90 is a full-on expedition rucksack

Gives 90-litres of superior load carrying in a streamlined design

New Mutant Nimsdai 90 is a full-on expedition rucksack

This is the Mutant Nimsdai 90 rucksack – named after Nimsdai Purja – the legend who climbed all 14 of the world’s 8,000m peaks in under seven months in 2019.

Nimsdai also then went on to become one of the first to summit K2 in winter without supplemental oxygen.

Osprey rucksacks were on his back for all of his achievements and this special version of the Mutant was born out of those adventures.

mutant nimsdai 90

Nimsdai’s Elite Expeditions logo features on the pack

It’s a full-on expedition pack with a 90-litre capacity and every aspect has been created with feedback from Nimsdai and his team members. It aims to be able to ‘handle superior load carrying in a streamlined pack that delivers stability when it matters most’.

Key features are:

  • +  Lid access with an under-lid rope carry option
  • +  Upper and lower side compression straps with SR buckles (SR = Side Release)
  • +  Front shield-pocket for snow-shoes or crampons
  • +  SR-buckle release ice-tool holders (SR = Side Release)
  • +  Side ski carry loops
Mutant Nimsdai 90

Weighs 2.1kg and made from bluesign® approved recycled fabrics

Mutant Nimsdai 90

Dual ToolLocks, rope carry, snowshed backpanel, glove-friendly buckles and strippable features.

It comes in one colour (Tungsten Grey with orange detailing) and is available in back sizes S/M and M/L, both priced at £275.

Nimsdai says:

“For me, I just want to have the best kit available on the planet. My kit has to endure extreme conditions and carry me to the top no matter what the challenge. With a positive mindset, the right kit and sheer determination, we can all achieve the impossible.”

Mutant Nimsdai 90 and the man himself.

See more on this at and read about the other packs in the Mutant series here.