Shop Smartwool Base Layer Clothing

Men's Classic All-Season Merino Base Layer Bottom

Women's Classic Thermal Merino Base Layer Crew Top

Men's Classic Thermal Merino Base Layer Crew Top

Women's Classic Thermal Merino Base Layer 1/4 Zippers Top

Women's Classic Thermal Merino Base Layer Bottom

Men's Classic All-Season Merino Base Layer Long Sleeve Top

Women's Classic All-Season Merino Base Layer Long Sleeve Top

Women's Everyday Merino Bikini

Men's Intraknit Thermal Merino Base Layer Bottom

Women's Thermal Merino Rib Turtleneck

Women's Classic All-Season Merino Base Layer Bottom

Men's Classic Thermal Merino Base Layer Crew

Women's Classic Thermal Merino Base Layer Bottom

Men's Classic Thermal Merino Base Layer Bottom

Men's Active Boxer Brief

Men's Merino Boxer Brief

Women's Merino Bikini

Women's Classic Thermal Merino Base Layer 1/4 Zip

Women's Classic Thermal Merino Base Layer 1/4 Zip Boxed

Men's Classic Thermal Merino Base Layer 1/4 Zippers Top

Men's Merino Boxer Brief

Men's Classic Thermal Merino Base Layer Bottom

Women's Intraknit Thermal Merino Base Layer Crew Top

Women's Merino Blend Bralette

Men's Active Boxer Brief

Men's Everyday Merino Boxer Brief

Women's Intraknit Hipster

Men's Intraknit Thermal Merino Base Layer Crew Top

Women's Classic Thermal Merino Base Layer 1/2 Zippers Hoodie

Men's Merino Boxer Brief