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Thorsen Men's Lightweight Down Jacket

Thorsen Men's Lightweight Down Jacket



A hoodless, collared version of the Fenrir, the Thorsen is designed for further weight saving and for those who prefer no hood. Stuffed with 850 Fill Power goose down, in a premium 93/7 down/feather ratio for an excellent warmth to weight ratio. Our water-repellent down from DownTek™ stays dry 10x longer than untreated down. Unlike inferior versions, our water repellency won’t wash out and is free of harmful fluorocarbons. Our ethical approach to down sourcing complies with the Responsible Down Standard.

A water repellent rip-stop face fabric resists the wet, and potential moisture zones at the cuffs, hem and collar contain synthetic insulation. The Thorsen also features stretch technical cuffs, and is supplied with its own stuff sack for easy carriage.

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Sizing Chart
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Internal zipped pocket sized to take phones, keys and maps.


Stretch cuffs mean no removing gloves to put your jacket on – bulky gloves just push right through and seal.


The Thorsen has a great warmth to weight ratio and stuffs down small into its own compression sack.


Anti-snag hem cords discourage tangling with gear, a problem with outdated loop cords.

Design & Construction

Fabric & Fill
850 Fill Power hydrophobic goose down
93/7 down/feather ratio
120g/m2 synthetic fill in cuffs and neck
Windproof, micro rip-stop, nylon with water repellent finish. 30 denier

Standard fit allows light layering underneath
Scoop drop back hem

Embroidered chest and rear logos

Aegean Blue, Black, Dark Ink, Oat

S, M, L, XL

Features & Components

Technical stretch cuffs
Synthetic insulated cuff fill

Draw Cords
No loop, anti-snag hem draw cords. Glove compatible

Hand warmer pockets with front facing insulation
One internal valuables pocket

YKK® front zip with internal baffle
YKK® hand pocket zips
YKK® internal valuables zip

Stuff Sack
Separate stuff sack included

Technical Data

270 g / 9.5 oz. (men’s medium)

Fabric Weight
Synthetic weight: 120g/m²

Customer Reviews

Based on 5 reviews
First Jottnar product, not the last - superb

I am active (British) military, currently serving in Nevada and I travel a lot across the US states. I also hike, and ride motorbikes.

I've used this as a baselayer under my bike jacket down to 0 degree ambient (translates to about -20 with windchill), i've worn it out and about in 0 degrees ambient waiting for friends, i've worn it hiking and i'm used it constantly for travel as my carry-on jacket since it packs down. Regulates body temperature very well. Not felt cold once.

Some advantages:

- The pack down ability is incredible, much better than the Rab and Mountain Hardware lightweight down jackets I used to have.
- The 850 is clearly good quality - i've not seen it 'leaking' down yet and it has regulated my core extremely well
- The fit and finish is outstanding. Noticeably better than Rab/Mountain Hardware/Eddie Baur/Spyder. I also own a Canada Goose Parka and I would place Jottnar equal to/slightly ahead. $350 may seem a lot but I think it's worth the outlay. It certainly lasts well.


- The shell material, although hard wearing is extremely slippery. I own wear a bag thrown over one shoulder and the grip of the jacket just isn't there, forcing me to wear both straps and entirely forego messenger style bags. It's annoying for sure - no deal breaker since the rest of the jacket is so good but still not ideal.

All in all i'm extremely impressed by this jacket, I will be buying more from Jottnar, and I doubt i'll go back to any other outdoor brand for my technical clothing needs.

Almost perfect

This is a great jacket, very warm for it's weight, a long back which is great for me and good hem draw cords. I've used it in low 1-2 C in UK and - 10C in Ukraine and it's performed brilliantly. A few things keeping it from 5/5, first is that the insulation thins on the back of the neck quickly, the cuffs are a bit loose, I personal prefer a soft longer cuff (like Arc'teryx Atom) , and the lettering on the inside of the jacket started to peel after a only a few weeks (minor point).

The best down jacket I've ever owned.

The best down jacket I've ever owned. It has been all round the world with me and never disappoints. Worn over a t-shirt when mild and fully layered up when seriously cold. Just does the job.

The best down jacket Ive ever owned.

The best down jacket I've ever owned. It has been all round the world with me and never disappoints. Worn over a t-shirt when mild and fully layered up when seriously cold. Just does the job.

Very impressed so far.

Great weight to warmth, worn under a Bergelmir hard shell at minus 8C with 30 mph winds while skiing and stayed warm without overheating when working. Cut keeps lower back warm when active. Surprisingly wind proof when worn as an outer layer and wicks moisture away well. Very impressed so far.

Free Express Global Delivery option

Responsible Sourcing & Manufacture

Dedicated Customer Support

Lifetime Warranty

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