Heimdall Extrafine Merino Baselayer

Name: Jöttnar Heimdall Extrafine Merino Baselayer - Heimdall Extrafine Merino Baselayer
Brand: Jöttnar
SKU: 55914045866364
Price: 149.0 GBP
Availability: InStock
Rating: 5 (6 reviews)

4.5 (1,234)

Sold 100+ last 30 days

20% off first order

£149.00

Quantity

Color

Black

Quantity

Description

Warm, moisture-managing, itch-free merino base layer for cold-weather layering.
Birdseye mesh knit enhances comfort and moisture management. Flatlock seams for comfort. Warmth, even when wet. Naturally odour-resistant, crease-resistant and...

Reviews

5.0

8 ratings

Wow! What a gem 💎

I live in baselayers, work in them, ride in them, run hike and climb in them, gym in them, and this one is an absolute beauty. Cant praise it highly enough. The detail is perfect. Feels so luxurious. My wife is jealous and asks “when are Jottnar making them for girls, please?”

Cris · January 15, 2026

Well worth it

Amazing quality, comfortable to wear. One of my favourite clothing purchase.

Ben · February 18, 2026

Heimdall

Unbelievable base layer and I’m turning into a jottnar nut. Was arcteryx through and through but now after last couple of purchases this is the brand i need.

Dave · December 8, 2025

Delivery & Returns

Jöttnar

4.8 (3K)

Product description loading

This is the product description text that will appear here.

Eldar Men’s Technical Octa® Lightweight Fleece

21% off

Jöttnar

Eldar Octa® Lightweight Fleece

(5)

£149.00£189.00

30% off

Jöttnar

Mar Extrafine Merino T-Shirt

(32)

£55.00£79.00

49% off

Jöttnar

Elv (Past Season) Lightweight Technical T-Shirt

(8)

£33.00£65.00

10% off

DANISH ENDURANCE

EXTREME MERINO BASELAYER SHIRT

$71.95$80.00

ThruDark

FORCE DRIRELEASE® TANK

(11)

$87.00

Snow Finel

Womens Merino Ski Baselayer Round Neck - Navy Alpine Detail

$125.00

40% off

Jöttnar

Tol Lightweight Softshell Trousers

(7)

£107.00£179.00

Mjolnir Unisex Merino Blend Technical Beanie

16% off

Jöttnar

Mjolnir Fleece-lined Merino Technical Beanie

(1)

£38.00£45.00

Fjellvak Men’s Featherlight Flexible Trail Cap

16% off

Jöttnar

Fjellvak Featherlight Trail Cap

(5)

£38.00£45.00

Breathable walking basics

Tanks, sneakers, and sun care.

Striped sweater with orange and black horizontal stripes on a white background

Snow Finel

Womens Merino Striped Ski Baselayer Round Neck - Navy Pink and Orange

$125.00

Jelenew

Merino Wool Blends Sleeveless Baselayer

$85.00

ThruDark

4.9

(10.2K)

Studio Image Of Veles Jacket In Obsidian Black (SS Model)

SM Cut of Out Thrudark Cap - Obsidian Black In Obsidian Black (GM)

35% off

Jöttnar

Verja Lightweight Technical Hoody

(30)

£64.00£99.00

34% off

Jöttnar

Bjarg Softshell Short

£85.00£129.00

Woman wearing a black merino wool half-zip shirt, standing against a plain background.

11% off

DANISH ENDURANCE

CORE MERINO HALF ZIP BASELAYER SHIRT

$65.95$74.00

30% off

Jagdstiefel - Herren Jagdschuhe - Jagdbekleidung - Hillman

Jagdpullover - Merino Langarmshirt | Baselayer Herren 2BL

€139.00€198.00

10% off

DANISH ENDURANCE

CORE MERINO BASELAYER TIGHTS

(33)

$62.95$70.00

51% off

Jöttnar

Sinni Pure Merino Everyday Beanie

(7)

£19.00£39.00

Protein for GLP-1 routines

Powders, shakes, and mini bars.

35% off

Jöttnar

Elv Lightweight Technical T-Shirt

£45.00£69.00

Woman wearing a black, long-sleeved merino wool base layer shirt, standing against a plain backdrop.

11% off

DANISH ENDURANCE

CORE MERINO BASELAYER SHIRT

(40)

$63.95$72.00

11% off

DANISH ENDURANCE

EXTREME MERINO BASELAYER SET

(3)

$127.95$143.00

ThruDark

FORCE ACTIVE DRIRELEASE® TSHIRT

(27)

$94.00

49% off

Jöttnar

Bris Half Zip Baselayer

(6)

£40.00£79.00

40% off

Jöttnar

Sunnan Softshell Short

(18)

£65.00£109.00

35% off

Jöttnar

Einhar Windshell Jacket

(2)

£127.00£195.00

Unbound Merino

Men's Merino Flex Jogger

(117)

$188.00

Elevated activewear

Grip socks, performance tops, and leggings.

16% off

Jöttnar

Gald Merino Beanie - Galdhøpiggen Edition

(3)

£38.00£45.00

49% off

Jöttnar

Vorn Lightweight Trail Cap

(68)

£20.00£39.00

Jöttnar

Vikja 7 Inch Trail Running Short

(1)

£79.00

ThruDark

LONG MOUNTAIN SOCKS

(28)

$44.00

Snow Finel

Mens Merino Thermal Baselayer - Navy Cobalt Zip

$125.00

Description

Reviews

5.0

8 ratings

Wow! What a gem 💎

Cris · January 15, 2026

Well worth it

Amazing quality, comfortable to wear. One of my favourite clothing purchase.

Ben · February 18, 2026

Heimdall

Unbelievable base layer and I’m turning into a jottnar nut. Was arcteryx through and through but now after last couple of purchases this is the brand i need.

Dave · December 8, 2025