Shop Smartwool Base Layer Clothing

Women's Classic Thermal Merino Base Layer Crew Top

Women's Classic Thermal Merino Base Layer Bottom

Men's Classic Thermal Merino Base Layer Bottom

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

Men's Classic Thermal Merino Base Layer Crew Top

Men's Intraknit Thermal Merino Base Layer Bottom

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

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

Women's Classic Thermal Merino Base Layer Bottom Plus

Women's Everyday Merino Bikini

Men's Active Boxer Brief

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

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

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

Women's Intraknit Bikini

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

Women's Classic Thermal Merino Base Layer Pattern Crew

Men's Merino Short Sleeve Tee

Women's Merino Bikini

Women's Classic Thermal Merino Base Layer Crew

Men's Classic Thermal Merino Base Layer 3/4 Bottom

Men's Classic All-Season Merino Base Layer Bottom

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

Men's Merino Boxer Brief

Men's Intraknit Thermal Merino Base Layer Crew Top

Women's Intraknit Thermal Merino Base Layer Crew Top

Men's Classic Thermal Merino Base Layer Crew Top

Women's Intraknit Thermal Merino Base Layer Bottom

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

Women's Classic All-Season Merino Base Layer Bottom