Shop Smartwool Base Layer Clothing

Men's Classic Thermal Merino Base Layer Crew Top

Women's Classic Thermal Merino Base Layer Crew Top

Men's Classic Thermal Merino Base Layer Bottom

Women's Classic Thermal Merino Base Layer Bottom

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

Men's Classic All-Season Merino Base Layer Bottom

Women's Classic All-Season Merino Base Layer Bottom

Women's Classic Thermal Merino Base Layer Bottom

Women's Classic All-Season Merino Base Layer Bottom

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

Men's Merino Print Boxer Brief

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

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

Men's Merino Boxer Brief

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 Classic Thermal Merino Base Layer 1/2 Zippers Hoodie

Women's Thermal Merino Rib Turtleneck

Women's Merino Blend Bralette

Women's Intraknit Thermal Merino Base Layer Bottom

Men's Classic Thermal Merino Base Layer Hoodie

Men's Active Boxer Brief

Kid's Classic Thermal Merino Base Layer Crew Top

Women's Intraknit Hipster

Men's Everyday Merino Boxer Brief

Men's Classic Thermal Merino Base Layer One Piece Top

Men's Classic Thermal Merino Base Layer Colorblock Crew Top

Women's Classic Thermal Merino Base Layer One Piece Top

Men's Merino Boxer Brief