Shop Smartwool Base Layer Tops

Women's Classic Thermal Merino Base Layer Crew Top

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 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 Classic Thermal Merino Mock Neck

Women's Intraknit Thermal Merino Base Layer Crew Top

Men's Classic Thermal Merino Base Layer Hoodie

Men's Intraknit Thermal Merino Base Layer Crew Top

Women's Thermal Merino Rib Turtleneck

Women's Classic Thermal Merino Base Layer Crew Top

Men's Intraknit All-Season Merino Base Layer Crew Top

Men's Classic Thermal Merino Base Layer Colorblock Crew Top

Women's Intraknit All-Season Merino Base Layer Crew Top

Kid's Classic Thermal Merino Base Layer Crew Top

Men's Classic Thermal Merino Base Layer Crew

Men'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 All-Season Merino Base Layer 1/4 Zippers Top

Women's Classic Thermal Merino Base Layer Crew Plus Top

Men's Intraknit Thermal Merino Base Layer Colorblock Crew Top

Women's Classic All-Season Merino Base Layer Crew Top Plus

Men's Everyday Party Short Sleeve Button Down T-Shirt

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

Kids' Classic Merino Blend Base Layer Crew Top

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

Men's Classic All-Season Merino Base Layer Crew Top

Women's Classic All-Season Merino Base Layer Crew Top

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