Shop Smartwool Base Layer Clothing

Women's Intraknit Thermal Merino Base Layer Crew Top

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

Men's Classic All-Season Merino Base Layer Bottom

Women'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 1/4 Zippers Top

Men's Classic Thermal Merino Base Layer Crew Top

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

Women's Classic Thermal Merino Base Layer Bottom

Women's Everyday Merino Bikini

Women's Active Crop Bra

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

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

Women's Classic Thermal Merino Base Layer Crew Top Boxed

Men's Intraknit Thermal Merino Base Layer Crew Top

Women's Classic All-Season Merino Base Layer Bottom

Women's Thermal Merino Rib Turtleneck

Kids' Classic Thermal Merino Base Layer Crew Top

Women's Classic Thermal Merino Base Layer Bottom Boxed

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

Men's Merino Boxer Brief Boxed

Men's Classic Thermal Merino Base Layer Crew Top Boxed

Men's Intraknit Thermal Merino Base Layer Bottom

Men's Intraknit Thermal Merino Base Layer 3/4 Bottom

Women's Intraknit Thermal Merino Base Layer Bottom

Kids' Classic Thermal Merino Base Layer Bottom

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

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

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

Women's Classic Thermal Merino Base Layer Bottom Plus