Shop Smartwool Base Layer Clothing

Women's Classic Thermal Merino Base Layer Crew Top

Men's Classic Thermal Merino Base Layer Crew Top

Men's Classic All-Season Merino Base Layer Bottom

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 Base Layer 1/4 Zippers Top

Women's Classic Thermal Merino Base Layer Bottom

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

Men's Merino Boxer Brief

Women's Everyday Merino Bikini

Women's Merino Blend Bralette

Men's Active Boxer Brief

Men's Classic Thermal Merino Base Layer Bottom

Women's Active Crop Bra

Men's Everyday Merino Boxer Brief

Women's Intraknit Hipster

Women's Intraknit Thermal Merino Base Layer Crew Top

Men's Merino Boxer Brief

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

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

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

Men's Intraknit Thermal Merino Base Layer Crew Top

Women's Thermal Merino Rib Turtleneck

Men's Intraknit Thermal Merino Base Layer Bottom

Kid's Classic Thermal Merino Base Layer Crew Top

Women's Classic All-Season Merino Base Layer Bottom

Men's Classic Thermal Merino Base Layer Hoodie

Men's Intraknit Boxer Brief

Women's Intraknit Bikini

Women's Classic Thermal Merino Base Layer One Piece Top