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

Men's Merino Print Boxer Brief

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 Thermal Merino Rib Turtleneck

Kid's Classic Thermal Merino Base Layer Crew Top

Men's Classic Thermal Merino Base Layer Colorblock Crew Top

Women's Classic Thermal Merino Base Layer One Piece Top

Men's Classic Thermal Merino Base Layer Crew

Women's Everyday Merino Bikini

Kid's Classic Thermal Merino Base Layer Bottom

Women's Classic Thermal Merino Base Layer Bottom

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

Men's Intraknit Thermal Merino Base Layer Colorblock Crew Top

Men's Classic Thermal Merino Base Layer Bottom

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

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

Men's Merino Boxer Brief

Men's Active Boxer Brief

Kids' Classic Merino Blend Base Layer Bottom

Men's Classic Thermal Merino Base Layer Colorblock Crew

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

Women's Merino Bikini

Men's Classic All-Season Merino Base Layer Bottom

Women's Classic Thermal Merino Base Layer Crew Plus