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OREUS
with Aetherm™ Precision Insulation
The Ultimate Synthetic Insulation
Introducing the award-winning Oreus, the result of five years of meticulous development. Crafted with innovative Aetherm™ Precision Insulation that offers down-like performance with the durability and weather resistance of synthetic fill.
Endorsed by leading alpinists, this versatile jacket delivers superior warmth, functionality, and durability in challenging environments. Perfect for alpine climbing, ski touring, hill-walking and more, it’s truly versatile functioning as an outer layer, warm mid-layer, or lightweight belay jacket. Its warmth, quick-drying performance, low weight, and pack size make it perfect for any mountain activity.
Aetherm™ Precision Insulation - Where we need to be
Aetherm™ Precision Insulation from Mountain Equipment - a game-changer in outdoor insulation.
AethermTM offers the best of both worlds: the warmth and comfort of down with the ruggedness and weather resistance of synthetic insulation. Its patent-pending construction weaves together recycled synthetic fibres within a reflective internal layer, providing unparalleled warmth and comfort while minimising bulk and weight.
Experience a new standard in insulation technology with Aetherm™ Precision Insulation from Mountain Equipment.
Versatile. Warm. Low Weight.
The Oreus is not just a piece of gear; it's a versatile tool that empowers you to tackle a wide range of outdoor activities. Whether you're superalpine climbing in the high mountains, ski touring in the Alps, hill walking in Scotland, or rock climbing on high crags, the Oreus has you covered.
The jacket can be worn as an outer layer, a super warm mid-layer, or thrown over everything as a lightweight belay jacket, and the vest option adds even more versatility to your layering system. Its warmth and quick-drying performance make it ideal for those days when every sort of condition is thrown at you. Combined with its low weight and pack size it’s perfect for any mountain activity.
Oreus Jacket Features
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Incredibly warm for its weight with great lofting and packability thanks to Aetherm™ Precision Insulation
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Protection from the elements with a fully adjustable and insulated hood that easily fits over a helmet
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Zipped hand warmer pockets sit above a harness with an internal pocket that doubles as a stuff sack
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Easy to use 2-way front zip with an insulted baffle to keep out the cold
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A single chest pocket is useful for stashing essentials quickly while on the move
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Elasticated cuffs seal in warmth with or without gloves
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The outer fabric is incredibly lightweight and breathable with fluorocarbon-free DWR
Photo: Tom Livingstone testing an early prototype of the Oreus Jacket on K7, photo by Tad McCrea.
Crafted by Experts. Tested by Alpinists.
We have over 60 years of experience in crafting the world’s best insulation for mountaineering. Our products undergo rigorous testing in laboratories, and crucially, some of the toughest real-world environments.
Leading alpinists and mountaineers have extensively tested the Oreus. It has been used in expeditions to the Karakoram and Patagonia, as well as lightning raids in the Alps. Receiving rave reviews from the Mountain Equipment athlete and testing team, the Oreus has been praised for its exceptional warmth, lightweight design, and dependability in challenging conditions.
The overall opinion: the Oreus is a game-changer for mountain layering systems.
Oreus | Tried and Tested
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Tom Livingstone
"It’s re-imagined the concept, construction and capabilities of insulation. By having this warmer yet lighter jacket, I can take less weight and still do more."
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Freja Shannon
It served as an incredibly warm and light jacket to wear on belays and long evenings on a portaledge. I found it an essential piece of clothing for my adventure and I look forward to using it a lot more in the future.
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Tim Miller
It’s extremely versatile as a warm mid layer in winter or a belay jacket in summer. It packs down small, is super lightweight, feels great to climb in with unrestricted movement and provides the warmth of a much bigger jacket.
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Amelie Kühne
"We simply can't imagine exploring without it. This jacket lives up to its promises! It offers remarkable stability, shielding us from the biting winds and ensuring warmth throughout our journey."
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Keith Ball
"On damp Scottish winter belays, chilly early season rock climbs and whilst ski touring in Arctic Norway its proven to be indispensable. It has the best warmth to weight ratio of any synthetic jacket I have used."
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Kath James
"Light but warm, the perfect additional layer to have in your bag for a cold belay when there's a biting wind on the crag or for the ski down."
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