Shop Smartwool Base Layer Clothing

Women's Classic Thermal Merino Base Layer Crew Top

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

Women's Classic Thermal Merino Base Layer Bottom

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

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

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

Women's Intraknit Thermal Merino Base Layer Crew Top

Men's Intraknit Thermal Merino Base Layer Crew Top

Men's Intraknit Thermal Merino Base Layer Bottom

Women's Thermal Merino Rib Turtleneck

Men's Classic All-Season Merino Base Layer Bottom

Women's Intraknit Thermal Merino Base Layer Bottom

Women's Classic All-Season Merino Base Layer Bottom

Women's Classic Thermal Merino Base Layer Crew Plus Top

Women's Classic Thermal Merino Base Layer Bottom Plus

Men's Classic All-Season Merino Base Layer 3/4 Bottom

Women's Classic All-Season Merino Base Layer Bottom Plus

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

Women's Classic All-Season Merino Base Layer Bottom

Women's Classic Thermal Merino Base Layer Pattern Crew Plus

Women's Classic Thermal Merino Base Layer Pattern Crew

Men's Merino Print Boxer Brief

Men's Merino Boxer Brief

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

Men's Classic Thermal Merino Base Layer Hoodie

Women's Merino Blend Bralette

Kid's Classic Thermal Merino Base Layer Crew Top

Men's Active Boxer Brief