Mammut Aenergy IN Hooded Jacket

Polartec Alpha Direct Insulation 95g/sqm
Weighs 340g (Medium size)
Code: AW18266
  • Now £139.99
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A go anywhere, do anything kind of jacket that is built to work as hard as you do. Zoned Polartec Alpha Direct lining makes this jacket soft, comfortable and warm but more importantly amazingly effective at regulating heat. This jacket works best when you are most active which is usually the main problem for most other pieces of kit. 

Mammut says:

Are mountain expeditions your passion? As an insulating jacket, the Aenergy IN Hooded Jacket Men prepares you for cold temperatures. Very breathable Polartec® Alpha® direct insulation material meets vapor-permeable, wind- and water-repellent Pertex® Quantum Air outer material on areas exposed to wind and cold, protecting you against the weather conditions. The jacket's cut with stretch fleece sections offers you optimal freedom of movement. The Aenergy IN Hooded Jacket Men boasts a modern, sporty outdoor look thanks to its seamless construction, allowing you to enjoy a high level of comfort.

Mammut's Aenergy IN Hooded Jacket has Polartec Alphe Direct insulation combined with stretch panels to make an amazing jacket for a wide range of activities. The clever combination is zoned to give you active insulation where you need it most while the stretch panels maximise movement. The insulation is covered by a wind resistant outer while the other panels, which are naturally sheltered, are able to provide a lot more breathability. The Polartec Alpha Direct insulation is really soft and comfortable but also gives you a decent level of warm. However, it works best when you're active as it breathes well and wicks amazingly so your temperature is regulated as you go.

This is my number one jacket for heading outdoors. I don't use it for pure insulation, a synthetic or down jacket would be taken instead, but it is perfect for when you work up a sweat heading up the hills and mountains. The stretchy thumb loops, peaked hood and hand warmer pockets are all little extras that help make this jacket a winner.

- Reviewed by Ultralight Outdoor Gear

  • Very breathable Polartec Alpha Direct insulation material (95g) combined with vapor-permeable, wind and water repellent Pertex Quantum Air outer material on areas exposed to wind and cold
  • Lining free Polartec Alpha Direct offers heat retention without heat nuild-up
  • Fast drying, stretch fleece material sections
  • Elastic fleece sections on hood and upper back for optimum freedom of movement and vision when on the move
  • Anatomic hood with reinforced peak
  • Stretch insert running from hood to upper back for optimum freedom of movement and keeping the field of vision while wearing the hood
  • Zipper with clip-down slider
  • YKK Vislon front zipper for smooth operation
  • 2 zipper side pockets
  • Comfortable thumb loops
  • Adjustable, elasticated hem for a good fit
  • Sporty, modern outdoor look thanks to high-tech seamless finish
  • Small weighs: 322g
  • Medium weighs: 340g
  • Large weighs: 368g
  • XLarge weighs: 398g
  • Athletic fit


  • Main fabric: Pertex Quantum Air / 100% Polyamid
  • Face material: Polyester Elastane Knit / 96% Polyester, 4% Elastane
  • Lining: Polartec Alpha Direct / 100% Polyester
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