Baselayers

The Foundation of Every Layering System

Brynje baselayers use open mesh construction to move moisture away from the skin, create insulating air pockets, and help regulate body temperature across changing conditions and activity levels.

Find the Right Baselayer: Compare our materials, warmth levels, and best-use scenarios using the comparison tool below, or take our quick quiz for a personalized recommendation.

Find Your Perfect Baselayer

Still Need A Hand?

Our gear experts are ready to help you nail your layering system.

Merino Mesh

For comfort, temperature stability, and natural odor control.

Wool Thermo -22°F to 41°F (-30°C to +5°C)
Exertion Level Low to moderate
Strengths Soft. Warm when damp. Odor-resistant.
Fiber 80% Merino - 20% PA - 17.5 micron
Best For Hiking, Daily wear, Travel

Most merino brands don't mesh-knit. The yarn has to be stronger and the gauge tighter. We've never made it any other way.

SHOP MERINO MESH →

Synthetic Mesh

For high exertion, extreme cold, and serious sweating.

Super Thermo -22°F to 59°F (-30°C to +15°C)
Exertion Level High to extreme
Strengths Dries in minutes. Zero water weight gain.
Fiber Schoeller Polycolon - 100% PP
Best For Ski-tour, Ultra, Polar, Rescue

The original 1976 formula. SINTEF named it best in test in 1988. Every Norwegian polar expedition since has worn it.

SHOP SYNTHETIC MESH →

+ Still Can't Choose?

Arctic Double Knits Them Together

Synthetic mesh inside, merino outside, knit as one two-layer garment. Still our bestseller since 1997.

Temperature Range -40°F to 23°F (-40°C to -5°C)
Exertion Level Low to moderate
SHOP ARCTIC DOUBLE →

Mesh Knit

Permanent air gap creates a micro-climate to prevent saturation. Essential for high output.

Solid Knit

Traditional, maximum surface-to-skin contact. Best for warmth in low-output, static conditions.

Filters

Sort by:

47 products

Wool Thermo Long Sleeve Shirt with Inlay – Black, front
Color
Super Thermo Long Sleeve with Inlay – Navy, front
Color
Wool Thermo Longs Base Layer with Inlay – Black – front
Color
Super Thermo Longs Base Layer with Inlay – Navy – front
Color
Super Thermo T-Shirt Base Layer with Inlay – Navy – front
Color
Wool Thermo T-Shirt Base Layer with Inlay – Black – front
Color
Super Thermo 3/4 Longs Base Layer, No Fly – Black – front
Color
Super Thermo Longs Base Layer w/Inlay -Women's – Black – front
Color
Wool Thermo Zip Polo Base Layer with Inlay – Black – front
Color
Wool Thermo Light Shirt – Black – front
Wool Thermo Light Shirt Sale price$109.95 USD
Color
Wool Thermo Longs Base Layer with Inlay - Women's – Black – front
Color
Super Thermo Zip Polo Shirt with Inlay – Black – front
Color
Wool Thermo A-Shirt Singlet Base Layer – Off White
Color
Wool Thermo Light T-Shirt Base Layer – Black – front
Color
Wool Thermo Long Sleeve Shirt Base Layer - Women's – Black – front
Color
Wool Thermo Light Zip Polo 3/4 Neck Base Layer – Black – front
Color
Tactical Wool Thermo Long Sleeve Shirt – Olive Green
Color
Lady Wool Sports Top - Mesh – Black – front
Lady Wool Sports Top - Mesh Sale price$84.95 USD
Color
Super Thermo Long Sleeve Shirt Base Layer with Inlay - Women's – Black – front
Color
Super Thermo Boxer Short Base Layer with Windcover – Black – front
Color
Super Thermo C-Shirt Base Layer – White – front
Super Thermo C-Shirt Base Layer Sale price$59.95 USD
Color
Tactical Wool Thermo Longs – Olive Green – front
Tactical Wool Thermo Longs Sale price$119.95 USD
Color
Wool Thermo Light Zip Polo 3/4 Neck Base Layer - Women's – Black – front
Color
Wool Thermo Light Longs Base Layer
Color