Smartwool Intraknit Thermal Merino Quarter-Zip Base Layer Top - Women's, REI Co-op

REI Co-op Merino 185 Long-Sleeve Half-Zip Base Layer Top - Women's

Smartwool Intraknit Thermal Merino Crew Base Layer Top - Men's

Smartwool Intraknit Merino Leggings - Women's

Perfect for all of your sweatiest cold-weather activities, this minimalist Smartwool Intraknit Thermal Merino men's crew base layer top is lightweight

Intraknit Thermal Merino Crew Base Layer Top - Men's

Smartwool Intraknit Thermal Merino Quarter-Zip Base Layer Top - Women's

Smartwool Women's Base Layer Tops

Smartwool Intraknit Thermal Max Quarter-Zip Base Layer Top - Men's

With seamlessly integrated insulation and ventilation and articulated flex zones, the women's Smartwool Intraknit Thermal Max Quarter-Zip base layer

Intraknit Thermal Max Quarter-Zip Base Layer Top - Women's

Smartwool Classic Thermal Merino Quarter-Zip Base Layer Top - Women's

Smartwool Intraknit Thermal Merino Crew Base Layer Top - Women's

Smartwool Intraknit Thermal Merino Crew Base Layer Top - Women's

Made from their lightest-weight jersey and built for comfort, the women's Smartwool Classic All-Season Merino quarter-zip base layer top is game for

Classic All-Season Merino Quarter-Zip Base Layer Top - Women's

Smartwool Intraknit Thermal Merino Crew Base Layer Top - Women's