NEW DROP | Asger HS '25 | Hybrid Fleece Jacket

Fenrir Men's Lightweight Hooded Down Jacket
£345.00
Special Introductory Price
Fenrir
£345.00

Men's Lightweight Hooded Down Jacket

A Decade of Refinement. Now a World-First.

The very first of its kind; a highly technical goose down jacket and world's first to feature expedition-grade Pertex® Quantum Pro outer fabric crafted from NetPlus® — 100% recycled fishing nets, fully traceable to their source. This tough, innovative, water-resistant fabric makes this Fenrir our most durable yet. Delivering positive impact while upholding a decade-long legacy of exceptional cold-weather performance, unrivalled build quality, and an outstanding review pedigree.

The Fenrir boasts our optimum warmth-to-weight balance and 850 Fill Power DownTek™ hydrophobic down with a premium 93/7 down/feather ratio, the highest practically possible. DownTek™ down stays dry 10x longer and dries 3x quicker than standard down. Our ethical approach complies with the Responsible Down Standard, and our hydrophobic down uses bluesign®-approved clean chemistry for its water repellent treatment.

Synthetic fill placement optimised for neck and cuff moisture zones enhance performance. Jöttnar’s signature no-snag hem cords reduce risk of gear tangling. Technical stretch cuffs allow bulky gloves to be worn. A highly compressible package complete with separate stuff sack, that excels as both a midlayer and outer.

Also available as a gilet.

Reviews displayed include the earlier editions of the Fenrir. We’ve kept them here to showcase the Fenrir's legacy while introducing this new world-first version.
Read Technical Specification
Sizing Chart
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Design & Construction

Usage

All-mountain, cold weather midlayer or standalone piece

Fabric & Fill

850 Fill Power hydrophobic goose down

93/7 down/feather ratio

100g/m2 synthetic fill in cuffs and neck

Pertex® Quantum Pro: 30 denier micro rip-stop nylon with water-repellent treatment, woven with Bureo® NetPlus® recycled net.

Fit

Set-in sleeve for ease of motion and improved mobility

Standard fit allows light layering underneath

Logo

Embroidered chest and rear logos

Colours

Black, Eclipse, Forest

Sizes

S, M, L, XL

Features & Components

Hood

Elasticated down-filled hood with synthetic filled chin piece.

Cuffs

Technical stretch cuffs

Synthetic insulated cuff fill

Draw Cords

No loop, anti-snag hem draw cords

Glove compatible

Pockets

Hand warmer pockets with front facing insulation

Internal valuables pocket

Zips

YKK® front zip with self-fabric zip guard to prevent catching

YKK® hand pocket zips

YKK® internal valuables pocket zip

Stuff Sack

Separate stuff sack included

Technical & Care

Weight

475g (men’s medium)

Fabric Weight

Synthetic weight: 100g/m²

Wash Care Instructions

Machine wash at 30°c - gentle wash

Do not dry clean

Do not iron

Tumble dry cool

Do Not Bleach

Layer Up

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VALEN

The perfect 3-season outdoor softshell trousers designed for all-mountain use in mixed conditions.

MJOLNIR

Technical, lightweight merino blend beanie with an internal fleece ear warmer and superb shape retention - helmet compatible.

Customer Reviews

Based on 241 reviews
94%
(227)
4%
(10)
2%
(4)
0%
(0)
0%
(0)
C
Ciaran
Customer Service

Ordered this in an XL and found it too big so a replacement was sent out instantly, top class customer service

J
James M.
5* customer service and jacket

Massive shout out to Morgan for sorting an exchange for me on 23 December, with the jacket being delivered on Christmas Eve no less! Blown away by the customer service. Having tried various other down jackets (inc. Rab and Peak Performance), the Fenrir is a noticeably more premium product.

For tall people out there - I’m 6 foot 5 with a medium build and needed XL as the L came up a little short in the arms and body and tight in the shoulders.

J
John C.
Best customer service!

The jacket aside, I want to give a massive shout-out to Morgan. My initial order hadn't arrived after a couple of weeks and I mentioned this when asked for feedback. Within minutes, Morgan took ownership of this without any questions and arranged for another delivery, which arrived the next day! Simply outstanding customer service, thank you Morgan!

The jacket will be getting tested on Saturday, I'm heading out to Beinn Mhanach and the forecast is -10C and heavy snow...can't wait to try it out!!

M
Mark L.
Ultimate kit!

This Fenrir is replacing my tired Arcteryx lightweight down jacket, but the warmth, technical cut, details on the cuffs and snugness around the neck and hood are superior. I’m a convert!

I
Iain B.
Hoofing bit of kit!

The Jöttnar Fenrir jacket is an investment.

It’s performance and design make it a worthwhile choice for anyone serious about outdoor adventures.

Pro’s for me are the warmth-to-weight ratio, tailored fit and the ethically sourced down.

I wear it with a T-shirt only, but there is plenty of room for layering.

I am ~97kg, 181cm wearing an XL.
Arm length: 60cm
Shoulder: 125cm
Chest: 114cm

Customer Reviews

Based on 241 reviews
94%
(227)
4%
(10)
2%
(4)
0%
(0)
0%
(0)
C
Ciaran
Customer Service

Ordered this in an XL and found it too big so a replacement was sent out instantly, top class customer service

J
James M.
5* customer service and jacket

Massive shout out to Morgan for sorting an exchange for me on 23 December, with the jacket being delivered on Christmas Eve no less! Blown away by the customer service. Having tried various other down jackets (inc. Rab and Peak Performance), the Fenrir is a noticeably more premium product.

For tall people out there - I’m 6 foot 5 with a medium build and needed XL as the L came up a little short in the arms and body and tight in the shoulders.

J
John C.
Best customer service!

The jacket aside, I want to give a massive shout-out to Morgan. My initial order hadn't arrived after a couple of weeks and I mentioned this when asked for feedback. Within minutes, Morgan took ownership of this without any questions and arranged for another delivery, which arrived the next day! Simply outstanding customer service, thank you Morgan!

The jacket will be getting tested on Saturday, I'm heading out to Beinn Mhanach and the forecast is -10C and heavy snow...can't wait to try it out!!

M
Mark L.
Ultimate kit!

This Fenrir is replacing my tired Arcteryx lightweight down jacket, but the warmth, technical cut, details on the cuffs and snugness around the neck and hood are superior. I’m a convert!

I
Iain B.
Hoofing bit of kit!

The Jöttnar Fenrir jacket is an investment.

It’s performance and design make it a worthwhile choice for anyone serious about outdoor adventures.

Pro’s for me are the warmth-to-weight ratio, tailored fit and the ethically sourced down.

I wear it with a T-shirt only, but there is plenty of room for layering.

I am ~97kg, 181cm wearing an XL.
Arm length: 60cm
Shoulder: 125cm
Chest: 114cm

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