Shop Smartwool Base Layer Clothing

Women's Classic Thermal Merino Base Layer Crew Top

Men's Classic Thermal Merino Base Layer Bottom

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 Bottom

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

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

Women's Intraknit Thermal Merino Base Layer Crew Top

Women's Thermal Merino Rib Turtleneck

Men's Classic Thermal Merino Base Layer Colorblock Crew Top

Women's Intraknit Thermal Merino Base Layer Bottom

Men's Classic All-Season Merino Base Layer Bottom

Men's Classic Thermal Merino Base Layer Crew

Women's Classic All-Season Merino Base Layer Bottom

Women's Classic Thermal Merino Base Layer Crew Plus Top

Women's Classic Thermal Merino Base Layer Bottom

Women's Everyday Merino Bikini

Men's Classic Thermal Merino Base Layer Bottom

Women's Classic Thermal Merino Base Layer Bottom Plus

Men's Merino Boxer Brief

Men's Active Boxer Brief

Women's Intraknit Hipster

Women's Intraknit Bikini

Men's Classic Thermal Merino Base Layer Colorblock Crew

Women's Active Biker Short

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

Men's Intraknit 6" Boxer Brief

Women's Classic Thermal Merino Base Layer Bottom

Men's Merino Print Boxer Brief

Men's Active Boxer Brief