When the name of the game is speed in the high alpine, we opt for the Mammut Aenergy IN Hybrid Jacket. This high-tech midlayer pulls sweat off our skin, breathes well, and traps heat to keep us feeling our best throughout multiple laps in dreamy backcountry terrain.
- High-performance insulating midlayer designed for alpine missions
- Nylon face fabric offers durability for daily adventures
- Octa Loft insulation provides lofty warmth for ice-cold days
- Dual zippered pockets keep skins warm to melt snow
- Raised collar seals out gusting wind for added warmth
- Packs into side pocket for excellent stashability
- Item #MAMU5KG
- Responsible Collection
- Recycled/Repurposed
- Material
- [face fabric] 100% nylon, [panels] 88% polyester, 12% spandex
- Insulation
- Octa Loft (52% recycled)
- Fit
- athletic
- Length
- hip
- Hood
- none
- Pockets
- dual zippered chest
- Thumbholes
- yes
- Activity
- backcountry skiing, backcountry snowboarding, mountaineering, camping
- Manufacturer Warranty
- 2 years























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