Warm and breathable for high-intensity ascents. Tested by athletes as part of our Eiger Nordwand range, this jacket offers versatile protection as a mid- or outer layer. Quick-drying Polartec® Alpha® Direct Polypropylene insulation provides warmth in harsh conditions while allowing sweat to escape....
6/6Mountaineering
5/6Freeriding
5/6Ski Touring
5/6Skiing
5/6Alpine Climbing
4/6Ice & Mixed Climbing
Lightweight, durable and wind-resistant 20D Pertex® Quantum Air recycled nylon for high breathability and thermal comfort throughout intense activities
With PFC-free Durable Water Repellent (DWR) treatment
Custom-developed Polartec® Alpha® Direct Polypropylene is a lightweight, highly air permeable and fast-drying insulation with an optimum warmth-to-weight ratio
Climbing-specific pattern for an articulated fit and freedom of movement
Helmet-compatible 1-way adjustable hood with reinforced peak
2-way YKK® VISLON® center front zipper
Designed for repair: design and workmanship facilitate repair of the center front zipper
Two chest pockets with #3 YKK® coil zippers
Jacket packs into its large chest pocket
Polartec® Power Stretch® Pro™ inserts at forearms for great stretch and comfort
Custom-designed cord pullers for easier usability with gloves
Designed for repair: includes a repair patch kit for quick, temporary, on-the-go fixes
2-way #5 YKK® VISLON® center front zipper with easy-repair zipper slider
"Wore this as a layered system in combination with the Eiger Nordwand Advanced FL Half Zip and a shell. Worked out great in winter conditions with 55 knot winds."
— Brad S. (5/5)
My favorite 3-Season jacket
"I am really impressed with the versatility of this jacket. I have worn it while snowshoeing in 20 degrees F with a wool t-shirt to using it with no shirt in 50 degrees F. It is exceptionally warm for the minimal bulk it has. Alpha Direct is amazing. I like that the pockets can be used as vents to help dissipate heat.
I like the rugged zipper versus a thin zipper that saves only a few grams. The fit is trim and designed with be used with a full range of arm movement so the sleeves do not expose the wrist and the hem still provides coverage.
The DWR is only suitable for very light precipitation."
— Bill K. (5/5)
Like Most Mammut Products This Thing Is Epic
"Excellent warm to weight ratio. Light face fabric but remarkably wind proof. Used as both a mid-layer and outer layer for downhill skiing and just everyday walking about. Would definitely recommend as a more versatile and functional alternative to standard light to mid-weight puffy jacket. Haven't used long enough to comment on durability, but given the brand and sturdy construction I am more than confident it will last many years."
— Samuel N. (5/5)
Warmth and lightness
"A super warm and lightweight jacket. I've never owned a jacket with such a good hood, which doesn't restrict head movement when wearing a helmet, and doesn't slip off. It can also be adjusted well without it."
— Szczepan P. (5/5)
Performs Really Well, Minor Design Flaws
"This is a very cool jacket, great for breathability in high intensity outdoor activities while still providing a layer of insulation. It has a thin shield on the exterior, providing a protective barrier to the ultra breathable polartec insulation that would be very fragile otherwise. The only reason this gets 4 instead of 5 stars is because the Norrona Lyngen Alpha100 is a similar jacket that does it slightly better. The cut for Mammut's sleeves around the forearms is surprisingly baggy while the rest of jacket is trim, leading to excess fabric that may get snagged on twigs and rocks. Additionally, the chest pockets are placed for harness and backpack compatibility, but the 20D exterior shell seems a bit thin for that use. The jacket has not torn for me since I use it as a mid layer under a dedicated shell, though the design would indicate it is more robust than it feels. I would highly recommend to anyone looking for a mid layer in high output activities, if you can get it cheaper than Norrona's, it's worth it."
— Christian R. (4/5)
Non-restrictive, comfortable and packs down
"Non-restrictive, comfortable and packs down very well. Great in the rain and on windy days. Fit feels a little small compared to other mammut jackets of the same size."
