This men’s thermal base layer is for working in serious cold, with a recommended temperature range of -5°C to -30°C. It pairs the moisture-wicking ability of synthetic underwear with the warmth of merino wool.
The two-layer construction draws moisture from the skin to the outer layer, where the fine merino fibres absorb it. This helps you stay drier and warmer through long, active shifts in low temperatures.
Key features
- Two-layer knit carries moisture away from the body to help keep you dry
- Fine merino wool in the outer layer absorbs moisture and insulates against the cold
- Rib-knitted inner sits close to the skin for efficient wicking
- Extended back helps keep the lower back covered when you bend or reach
- One-way plastic front zip lets you adjust ventilation as you warm up
- External labels keep the inside smooth against the skin
Materials and performance
50% merino wool and 50% polypropylene, rib knitted with wicking and moisture management, 235g/m².
Standards and protection
Certified to OEKO-TEX Standard 100.
Fit and sizing
Regular fit. See our Blåkläder Sizing Guide for detailed information.
Layering
Wear it next to the skin as your base layer, with a midlayer and outer layer on top. Close-fitting contact lets the inner layer draw moisture away so your other layers stay drier.
Care
- Machine wash at 40°C on a gentle cycle
- Do not bleach
- Do not tumble dry
- Do not iron
- Do not dry clean
- Use a wool detergent
Add your logo
If you’d like to add your logo to the Blåkläder 4891 Underwear top WARM 50% merino, please contact us.



















