Smartwool Intraknit Thermal Merino Base Layer Men's 1/4 Zip Size:L The Quadratic sidecut

The Quadratic sidecut

and a wide waist

Build your 30 liter carry-on wardrobe around core pieces like this one

for antimicrobial protection inside and out

Smartwool Intraknit Thermal Merino Base Layer Men's 1/4 Zip Size:L The Quadratic sidecutThe Intraknit Thermal Merino 1 4 Zip is Smartwools most advanced cold weather base layer, blending Merino wool and polyester for warmth, breathability, and precision mapped comfort. Its built for high output days on snow where temperature regulation and unrestricted movement are key. Why we like it: We like this piece for how it manages warmth and moisture without bulk. The Intraknit technology creates body mapped ventilation zones that move with you,