Shop Smartwool Base Layer Tops

Women's Classic Thermal Merino Base Layer Crew Top

Men's Classic Thermal Merino Base Layer Crew Top

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

Men'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

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

Women's Thermal Merino Rib Turtleneck

Men's Classic Thermal Merino Base Layer Crew

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

Men's Classic Thermal Merino Base Layer Colorblock Crew

Male Men's Classic Thermal Merino Base Layer Hoodie Boxed

Women's Classic Thermal Merino Base Layer Crew Plus

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

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

Women's Thermal Drape Neck Hoodie

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

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

Men's Merino 150 Baselayer 3/4 Bottom Boxed

Women's Classic Thermal Merino Base Layer Crew Top

Men's Classic Thermal Merino Base Layer Crew Top

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

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

Women's Intraknit Thermal Merino Base Layer Crew Top

Men's Intraknit Thermal Merino Base Layer Crew Top

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

Men's Classic Thermal Merino Base Layer Hoodie

Kid's Classic Thermal Merino Base Layer Crew Top