Mountain Equipment Kryos Men's Jacket

The perfect balance of warmth, protection, and lightweight design, this down-insulated jacket is specifically designed for winter alpine climbing and super alpinism in the world’s greater mountain ranges.

The Kryos was developed with input from some of the world’s top Alpinists, climbers who were increasingly pushing the boundaries of lighter jackets to conquer higher and more technical routes, aiming for reduced weight and pack size despite increasingly narrow margins. Through extensive research and development, and leveraging their insulation expertise, the aim was to create a jacket that would meet the demanding requirements of the toughest routes at altitudes of 6,000m and 7,000m, as well as the biggest modern Alpine winter lines, while providing significantly greater warmth and protection.

The key to this achievement was the creation of the FIRESTORM™ construction. This includes the use of a drop outer WINDSTOPPERⓇ shell, which dramatically reduces heat loss while offering enhanced weather protection—crucial for the most challenging routes. Beneath this, a hybrid design of stitch-through and pleated baffles is employed, optimised to deliver maximum loft and warmth from the 234g of goose down.

As Uisdean Hawthorn remarked after testing the final prototype of the Kryos on Pakistan’s Koyo Zom: ‘I was genuinely surprised by how much warmer this jacket was in real mountain conditions compared to anything I’ve used before… It’s significantly less bulky than other jackets, making it easier to second in after long belays.’

The Kryos has been part of numerous significant ascents, including Paul Ramsden and Tim Miller’s Piolet d'Or-winning first ascent of Jugal Spire, Tom Livingstone and Matt Glenn’s first ascent of the North East Pillar of Tengkangpoche, Freja Shannon’s multiple hard first ascents in Arctic Norway, and Uisdean Hawthorn’s Piolet d'Or-winning first ascent on Mount Robson’s Emperor Face.

Features

• The jacket features 234g of 800 fill power Goose Down, optimised with a baffle-by-baffle approach for maximum warmth and minimal weight.
• It uses WINDSTOPPER® by GORE-TEX labs ripstop with an ePTFE Membrane and 10 Denier shell, providing lightweight, durable weather resistance and moisture transfer.
• The FIRESTORM™ construction combines stitched-through and pleated baffles with the WINDSTOPPER® shell for superior warmth, reduced weight, and lower water and wind ingress.
• The Super Alpine HC Hood is helmet-compatible, with a Halo neck collar to reduce heat loss and enhance protection.
• It has two handwarmer pockets, two chest pockets, and two large inner drop pockets for easy access to essentials and keeping items warm.
• The two-way YKK® zip features a lightweight offset baffle to minimise heat loss and wind ingress, and is easy to use with gloves.
• Elasticated cuffs provide a secure fit with gloves, and the sleeves offer full mobility for climbing with multiple layers.
• Dual tethered drawcords allow for easy adjustments and increase thermal efficiency.
• A lightweight stuff sack is included.
• The shell fabric is produced by W. L. Gore & Associates in China.
• The design and development take place in the UK, with manufacturing in China.
  
• Mountain Equipment is a proud member of the Fair Wear Foundation.
  
  

Specifications

Technology

	Down 800 The finest quality goose down, sourced from Ukraine, with a guaranteed minimum down cluster content of 90%.Each batch is individually tested during the filling process to ensure a minimum fill power of 800.DOWN CODEX approved.
	Down Codex® The DOWN CODEX® is a highly acclaimed certification programme, recognised with multiple awards, which addresses the environmental, ethical, and animal welfare aspects of down supply chains.It is based on thorough and transparent auditing processes that guarantee both traceability and quality.
	Firestorm The Firestorm construction combines the benefits of stitch-through designs – offering enhanced freedom of movement and reduced weight – with the added protection of a fully separate GORE-TEX INFINIUM™ outer fabric, improving weather resistance.The result of extensive research and development, it is featured only in the brand's highest-performing down products and has been proven on some of the world’s most challenging mountains and routes by climbers such as Tom Livingstone, Nick Bullock, Paul Ramsden, and Chantel Astorga.
	GORE-TEX WINDSTOPPER® GORE-TEX WINDSTOPPER® fabrics blend multilayer membrane technology with high-performance textiles to create materials that are windproof, highly breathable, and exceptionally resistant to rain and snow.The hallmarks of WINDSTOPPER® are its weather resistance, protective qualities, and superior comfort

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