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

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

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

Men's Classic Thermal Merino Base Layer Crew

Women's Classic All-Season Merino Base Layer Bottom

Women's Classic All-Season Merino Base Layer 1/4 Zippers Top

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

Women's Classic Thermal Merino Base Layer Bottom

Women's Classic Thermal Merino Base Layer Crew Plus Top

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

Men's Intraknit Thermal Merino Base Layer Colorblock Crew Top

Women's Active Crop Bra

Men's Classic Thermal Merino Base Layer Bottom

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

Women's Classic Thermal Merino Base Layer Bottom Plus

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

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

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