Berghaus Aonach AX Breathable Down Jacket

Duck Down & Polyester Blend / Ripstop Outer
Weighs 464g (Medium size)
Code: AW18379
  • Now £169.99
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A warm insulating jacket that utilises the durable properties of synthetic insulation then adding unbeatable warmth-to-weight value of down. The blend of these two materials then allows Berghaus to use a lighter face fabric that equates to more breathabillity making the Aonach usable in a wider range of activities.

Berghaus says:

A revolution in midlayer performance, the Aonach AX is the worlds first truly breathable down jacket. Demanding mountain conditions and strenuous climbing creates the need for a jacket like no other.

The Aeonach AX is a high performance mid layer that delivers unrivalled comfort through a pioneering combination. Offering 50 times the airflow of a typical downproof fabric, the face fabric is incredibly air permeable.

When working with the new, ThinDown™ insulation it provides unparalleled air flow from your body to your outer layer, so you can stay cool and comfortable.

For warmth, the breathable down is many times warmer than your average fleece jacket but remarkably less in weight.

With meticulous stitching that takes learnings from our extensive body mapping research to provide warmth in areas where it is needed and less warmth in areas where its not, it's the perfect solution for stop start mountain conditions.

Overall, this is a revolutionary jacket containing high performance technology to provide warmth and comfort without overheating.

Berghaus' Aonach AX Breathable Down Jacket is something new and different, duck down added to a mat of synthetic insulation. There are no baffles to keep the down in place, it is part of the mat of insulation which is then stitched into place in a few select areas. We're sure this will work at keeping you warm but not too sure about whether it's going to be much more effective than synthetic insulation by itself.

The breathable outer fabric is also something different on an insulating jacket, what it gives you is a jacket that won't turn into a furnace if you're trudging up the side of a mountain. This makes the Aonach ideal for all-day wearing on a very cold winter walk.

- Reviewed by Ultralight Outdoor Gear

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Help and advice:
  All about down filling in sleeping bags
  • Enhanced breathability - Experience the synergy of face fabric that offers exceptional air flow and new ThinDown technology to allow greater airflow from your body to your outer layer
  • Superior insulation - Feel the benefit of significantly higher levels of warmth compared to normal fleece, from breathable down insulation that's much less in weight
  • Innovative body mapping - Benefit from meticulously placed stitching from our MTNHAUS team, that allows more heat in areas where its needed, and less in areas where its not
WARRANTY | This product comes with a lifetime guarantee for manufacturing faults and defects. For more details see Berghaus' website. What's covered and what's not?
  • Small weighs: 426g
  • Medium weighs: 464
  • Large weighs: 498g
  • XLarge weighs: 528g


  • Main: 81% Polyamide 19% Elastane
  • Lining: 88% Polyester 12% Elastane
  • Insulation: 52% Duck Down 48% polyester 45g/m2
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