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Eigerjoch Down Jacket - Men's

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World-class insulator for anywhere cold.

The Mammut Men's Eigerjoch Down Jacket warms you on frigid ski tours, freezing belays at ice crags, and anywhere cold from the city to the alpine. Light and lofty 800-fill down insulation makes the Eigerjoch surprisingly warm, superlight, and extremely compressible and packable. A double-chamber construction overlaps baffles to eliminate cold spots, and Mammut added synthetic insulation at the back and underarms to stay warm when sweaty and wet.

Mammut wrapped the Eigerjoch's light, protective, and innovative insulation in Pertex Endurance for extreme water-resistance, excellent breathability, and ultra-thin air permeability. Endurance's air permeability breathes the moment you put it on, as opposed to standard breathable fabrics that only start breathing after you start sweating. This down jacket also features Lycra hand gaiters with thumbholes, an adjustable drawcord at the hem, multiple pockets, and an additional packing bag for compact storage in ski packs.


  • Pertex Endurance shell
  • 800-fill down insulation
  • Double-chamber baffle construction
  • Fiberfill synthetic insulation body-mapping
  • Three-way adjustable hood
  • Lycra hand gaiters
  • Adjustable hem
  • Zippered hand and chest pockets
  • Internal mesh pockets
  • Additional packing bag
  • Item #MAM00F8
Pertex Endurance (20D nylon)
body and sleeves 800-fill goose down, back and underarms fiberfill
Baffle Construction
yes, 3-way adjustable
[external] 2 zippered hand, 1 zippered chest, [internal] 2 mesh stash
yes, Lycra
Claimed Weight
1 lb 11 oz
Recommended Use
climbing, ski touring, backcountry, alpine & expedition
Manufacturer Warranty