Shop Smartwool Base Layer Clothing 4

Kids' 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 Crew Top

Men's Everyday Merino Boxer Brief Boxed

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

Men's Wind Boxer Brief

Kids' Classic Thermal Merino Base Layer Crew Top Boxed

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

Men's Intraknit Boxer Brief Boxed

Men's Classic Thermal Merino Base Layer Colorblock Crew

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

Men's Merino Boxer Boxed

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

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

Women's Classic Thermal Merino Base Layer Crew Top Plus Boxed Charcoal Heather

Men's Classic Thermal Merino Base Layer Crew

Women's Classic Thermal Merino Base Layer Colorblock Crew Top Boxed

Women's Classic Thermal Merino Base Layer Bottom

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

Men's Intraknit 6" Boxer Brief

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 3/4 Bottom

Men's Classic Thermal Merino Base Layer Crew Top

Women's Intraknit Bikini

Men's Classic All-Season Merino Base Layer 3/4 Bottom

Kids' Classic Thermal Merino Base Layer 1/4 Zippers Top Boxed

Women's Classic Thermal Merino Base Layer Bottom Plus

Women's Classic Thermal Merino Base Layer Bottom Plus

Men's Classic Thermal Merino Base Layer Bottom