Mammut Aenergy Light Midlayer Jacket - Women's 5058-799
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Mammut Aenergy Light Midlayer Jacket - Women's

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See available Fleece jackets


Show Description

Breeze through the backcountry in a warm fleece midlayer. Bodymapped panels are optimized to manage your temperature: thicker fleece on the front, shoulders and outer arms keeps you toasty, while thinner fleece under the arms and on the back vents excess heat as you trek uphill. All-over stretch means the Aenergy Light ML won't hold you back when you reach for the next hold or excavate a bomber snow cave. Harness-friendly pockets and a super-soft chinguard round out a jacket that's made for the mountains.

  • Pontetorto® Tecnostretch fleece on front, shoulders and outer arms is soft and warm.
  • Thinner Pontetorto® Dryfast® fleece on back and under arms lets you vent heat when you're working hard.
  • Both fabrics incorporate stretchy elastane for great range of motion and provide UPF 30 sun protection.
  • Internal windflap and chinguard are soft against skin.
  • Zippered handwarmer pockets are set high enough to clear a climbing harness or backpack hipbelt.
  • Elastic cuffs and hem keep gusty winds out.

Tech specs

Show Tech specs
Ideal for
  • Alpine climbing and mountaineering
  • Backcountry skiing
  • Camping and hiking
  • Fleece
  • Mid-layer
  • Pontetorto Tecnostretch
  • Pontetorto Dryfast
Fabric content
  • 94% polyester
  • 6% elastane
Secondary fabric
  • 90% polyester
  • 10% elastane
Pockets 2 handwarmer

A windproof garment does not allow any air to permeate the fabric. A garment with windproof panels has panels of fabric that are totally windproof, but the rest of the garment may not be windproof. A wind-resistant garment resists some wind, but not as much as a garment that is windproof.

Additional feature(s) Wind flap behind zipper
UPF rating

The Ultraviolet Protection Factor rating indicates how effective a fabric is at blocking out solar ultraviolet radiation.

25-39 (Blocks ~96% of UVA/UVB)
Made in Portugal