25% off $100+ latest styles | Code: 4FRIENDS | Women I Men

Thermal underwear

Insulating base layers for days when warmth is a must.

Shop by warmth

Warm

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The Performance Warm Base Layer Top

$90.00

-10%

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The Active Warm base layer top

$58.50 $65.00

Warm

The Natural Merino 200 Base Layer Top

$105.00

-10%

The Active Warm Base Layer T-shirt

$54.00 $60.00

Warm

The Seamless Performance Wool crewneck base layer top

$140.00

-10%

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The Active Warm half-zip base layer

$67.50 $75.00

-10%

The Active Warm turtleneck base layer

$67.50 $75.00

X-Warm

The Natural Merino 260 Base Layer Half-Zip

$135.00

X-Warm

The Natural Merino 260 Base Layer Top

$125.00

-10%

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The Active Warm base layer set

$108.00 $120.00

Warm

The Natural Merino 200 Base Layer Bottoms

$105.00

-10%

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The Active Warm base layer bottoms

$58.50 $65.00

Warm

The Seamless Performance Wool full-length base layer bottoms

$140.00

Warm

The Seamless Performance Wool 3/4 base layer bottoms

$120.00

Warm

The Natural Merino 200 Base Layer 3/4 Bottoms

$90.00

X-Warm

The Natural Merino 260 Base Layer Bottoms

$125.00

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Engineered in Switzerland

Knitted in Norway