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The Havbris Wool T-shirt is the light layer. Thin, soft merino wool for outdoor training, hikes and warm days, on its own or as the inner layer under a sweater. Made to be worn right against the skin.
It is knitted using Brit’s knitting method – air knitted into every stitch, which keeps you warm. Made for switching between activity and rest, exactly what SINTEF tested in 1995: the test subjects became neither too warm while working nor too cold during the breaks. Wool can absorb a lot of moisture without feeling wet, so you stay warm even when you stop after being active.
“Didn’t itch, and didn’t get clammy even though I got nice and warm” – Tove-Mette K.
- Soft merino wool that many customers tell us doesn’t itch – even right against the skin.
- On its own for training and mild days, as the inner layer when it gets colder
- On the coldest days: Havbris next to the skin, Hustadvika on top
- 100% merino wool. The wool is RWS-certified, with requirements for animal welfare and traceability throughout the value chain.
The Havbris Wool T-shirt is the light layer. Thin, soft merino wool for outdoor training, hikes and warm days, on its own or as the inner layer under a sweater. Made to be worn right against the skin.
It is knitted using Brit’s knitting method – air knitted into every stitch, which keeps you warm. Made for switching between activity and rest, exactly what SINTEF tested in 1995: the test subjects became neither too warm while working nor too cold during the breaks. Wool can absorb a lot of moisture without feeling wet, so you stay warm even when you stop after being active.
“Didn’t itch, and didn’t get clammy even though I got nice and warm” – Tove-Mette K.
- Soft merino wool that many customers tell us doesn’t itch – even right against the skin.
- On its own for training and mild days, as the inner layer when it gets colder
- On the coldest days: Havbris next to the skin, Hustadvika on top
- 100% merino wool. The wool is RWS-certified, with requirements for animal welfare and traceability throughout the value chain.
Lanullva Air
It’s the air that keeps you warm
It isn’t just the wool that makes the difference. It’s the way we knit it.


Grandmother’s invention
Eilif came home cold and sweaty from working on the farm at Lyngstad. In 1994, Brit Vinje Lyngstad invented a knitting method with air knitted into every stitch – and Eilif stopped being cold. The following year, SINTEF tested the method on Svalbard.
- 1994Invented at Lyngstad
Brit knits the first sweater for Eilif.
- 1995Tested by SINTEF
Field-tested on Svalbard at −23 °C.
- 1996Svalbard, −50 °C
Worn by Scott Johnson, Arctic Polar, on Svalbard in February 1996.
How the knitting method works
Wool alone isn’t the whole explanation. What insulates is the still air held in the knit – and Brit’s method builds a lot of it in.
1
2
3
- 1Air knitted into every stitch
SINTEF described the knit as “a thick and open structure” with “a lot of air between the fibres”.
- 2The air holds the warmth
Your body heat stays in the air pockets, even when you take a break. SINTEF found that the insulation follows the amount of air in the knit.
- 3The wool does the rest
Wool can absorb a lot of moisture without feeling wet, so you stay warm when you stop after being active.
Inside the knit

Two layers for the coldest days
Havbris next to the skin and Hustadvika on top. Two layers with air in the stitch, made to be worn together when it gets really cold.
- Havbris – The light layer – next to the skin
- Hustadvika – The warm layer – on top