Shop Smartwool Base Layer Clothing

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

Women's Classic All-Season Merino Base Layer Bottom

Women's Classic Thermal Merino Base Layer Crew Top

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

Women's Merino Blend Bralette

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 Intraknit Thermal Merino Base Layer Crew Top

Men's Classic Thermal Merino Base Layer Bottom

Men's Classic All-Season Merino Base Layer Bottom

Men's Classic Thermal Merino Base Layer Hoodie

Women'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

Men's Intraknit Thermal Merino Base Layer Bottom

Women's Thermal Merino Rib Turtleneck

Men's Intraknit Thermal Merino Base Layer Colorblock Crew Top

Women's Classic Thermal Merino Base Layer One Piece Top

Women's Intraknit Thermal Merino Base Layer Bottom

Women's Classic Thermal Merino Base Layer Crew Plus Top

Women's Classic Thermal Merino Base Layer Bottom Plus

Women's Merino Bikini

Women's Classic Thermal Merino Base Layer Bottom

Men's Merino Boxer Brief

Men's Active Boxer Brief

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

Men's Classic Thermal Merino Base Layer Crew

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