Shop Smartwool Base Layer Clothing

Women's Classic Thermal Merino Base Layer Crew Top

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

Men's Classic Thermal Merino Base Layer Crew Top

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

Women's Classic Thermal Merino Base Layer Bottom

Men's Classic Thermal Merino Base Layer Bottom

Men's Intraknit Thermal Merino Base Layer Crew Top

Men's Classic Thermal Merino Base Layer Crew Top

Men's Classic Thermal Merino Base Layer Bottom

Women's Thermal Merino Rib Turtleneck

Women's Intraknit Thermal Merino Base Layer Bottom

Women's Classic Thermal Merino Base Layer Bottom

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 Top

Men's Classic Thermal Merino Base Layer Bottom

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

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

Men's Merino Sport Wind Boxer Brief

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

Men's Merino Sport Fleece Tight

Men's Merino Sport Fleece Wind Tight

Men's Merino Sport Fleece Pant

Women's Classic All-Season Merino Base Layer Bottom

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

Men's Merino Boxer Brief

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

Women's Intraknit Hipster

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

Women's Merino Blend Bralette