Peter Macfarlane awarded the Mammut Eigerjoch Pro IN Hooded jacket his best in test – and it was highly commended in our Gear of the Year Awards. Find out why.
The brand says the Mammut Eigerjoch Pro IN Hooded is their warmest jacket for extreme conditions and the construction is complex with a mix of goose down and PrimaLoft synthetic insulation in overlapping baffles.
Peter Macfarlane’s Best in Test
The high performance and complexity of construction may come at considerable cost, but in bitter winter wind and driven snow I pulled the Eigerjoch on and it was like stepping indoors.- performance
- features
- pack size
- price
| Quick specs |
|---|
| Price: $435 / £600 (available from Mammut) Weight: 828g size large Fill: 200g of 850 fill 90/10 water repellant goose down, Primaloft synthetic insulation Shell: Pertex® Quantum Pro 20D with DWR Hood: helmet compatible, front and rear drawcords, wired and stiffened peak Cuffs: elastic with internal wrist gaiters Hem: drawcord, two side adjusters Pockets: four external zipped, one internal zipped, two internal poachers’ pockets Sizes: S-XXL Women’s version: Yes mammut.com |
External seams are kept to a minimum and are mostly tape sealed for additional weather proofing and heat retention. This, along with an effective DWR makes the Eigerjoch good in wet snow and sleet.
The jacket isn’t overly big but it’s still more than I can pull a hard shell jacket over. The fit is quite slim in my regular large. I have room for a microfleece and a shell underneath it but anything more and I’d be compressing and compromising the insulation. I feel an XL would be too roomy, just giving me extra dead air to heat inside. Consider your sizing carefully.
The arm lift is excellent, no hem movement at all, and a hem which completely covers my backside. The main zip is baffled and reaches my nose, the large insulated hood pulls up and down without moving the zip. There are multiple hood adjusters, a large, stiffened peak and a fleece chinguard. There are four zipped chest pockets which are accessible while wearing a pack, one inner zipped and two big poachers’ pockets.
The cuffs are elasticated and have long stretch fabric inner gaiters with thumbloops which a while to get used to but work well and are compatible with winter gloves. The weight and packsise are on the high side , so for me the Eigerjoch is a winter day jacket – for overnighters I’d carry something more compressible. The high performance and complexity of construction may come at considerable cost, but in bitter winter wind and driven snow I pulled the Eigerjoch on and it was like stepping indoors.
Testing conditions
Peter rotated these jackets on every outdoor trip this winter so far, from Munros in all conditions to lunch breaks on ranger activities in the Kilpatrick Hills and static photography activities in sub-zero conditions. He wears a size large.
This review was first published in the March 2025 issue of The Great Outdoors.
