Shop Smartwool Base Layer Clothing 4

Women's Intraknit Bikini

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

Men's Wind Boxer Brief

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

Women's Classic Thermal Merino Base Layer Crew Plus

Men's Active Boxer Brief

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

Men's Intraknit Boxer Brief

Men's Classic Thermal Merino Base Layer Crew

Men's Everyday Merino Boxer Brief

Men's Merino Print Boxer Brief

Women's Classic Thermal Merino Base Layer Colorblock Crew

Unisex Kids' Classic Thermal Merino Base Layer Bottom

Men's Intraknit 6" Boxer Brief/Charcoal

Women's Intraknit Bikini

Women's Classic Thermal Merino Base Layer Bottom Plus

Men's Classic Thermal Merino Base Layer Colorblock Crew

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

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

Men's Classic Thermal Merino Base Layer Colorblock Crew

Men's Merino Boxer Brief

Women's Intraknit Thermal Merino Base Layer 1/4 Zip

Men's Merino Plant-Based Dye Boxer Brief

Men's Intraknit Active Base Layer Bottom

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

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

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

Men's Classic All-Season Merino Base Layer Bottom

Men's Intraknit 6" Boxer Brief

Men's Classic Thermal Merino Base Layer Pattern Bottom