The Mutant Nimsdai 90 is built to meet all the demands of high-altitude mountaineering.

Designed together with Nepalese elite mountaineer and Osprey Ambassador Nirmal Purja MBE (Nimsdai) - the fastest person to climb all 14 of the world's 8,000m+ peaks, and the first to summit K2 in winter without oxygen.

"It's THE ultimate workhorse backpack, able to withstand every challenge." - Nirmal Purja

No mountaineering pack has been tested quite like Osprey's new limited edition Mutant Nimsdai 90. With a streamlined, close-to-body fit, this pro-level pack was put to the ultimate test by Nimsdai and his team on their historic winter ascent of K2, proving capable of carrying bulky and heavy loads, whilst delivering exceptional stability and comfort in the harshest of environments.

Boasting a very specific feature set required for the mountains, Mutant Nimsdai 90 is built with reinforced high-tenacity nylon for extreme durability, an external shield pocket to hold crampons or snow shoes, and multiple lash and haul points to ensure equipment such as ropes, ladders and other critical kit is easily accessible, whilst remaining super secure.

Osprey's commitment to performance doesn't compromise on sustainability either. Mutant Nimsdai 90 is constructed with bluesign®-approved recycled fabrics, delivering excellent durability in a lightweight and low-impact package.

"Since Project Possible, I have always had Osprey on my back. High altitude mountaineering requires skill and a strong reliance on kit; my pack needs to comfortably support significant weight, carry critical equipment securely and perform in the most gruelling of terrains. It is, for this reason, I am proud of what we have created with the Mutant Nimsdai 90 – it's THE ultimate workhorse backpack, able to withstand every challenge." Nirmal Purja

For your chance to win an Osprey limited edition Mutant Nimsdai 90 pack answer the question below.