Shop Smartwool Base Layer Clothing

Women's Classic Thermal Merino Base Layer Bottom

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

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

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

Men's Everyday Party Short Sleeve Button Down T-Shirt

Men's Intraknit Thermal Merino Base Layer Crew Top

Women's Intraknit Thermal Merino Base Layer Crew Top

Women's Intraknit Thermal Merino Base Layer Bottom

Men's Classic All-Season Merino Base Layer Bottom

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

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

Women's Classic Thermal Merino Base Layer Bottom Plus

Men's Intraknit Thermal Merino Base Layer Bottom

Women's Merino Blend Bralette

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

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

Women's Classic All-Season Merino Base Layer Bottom Plus

Women's Thermal Merino Rib Turtleneck

Women's Classic Thermal Merino Base Layer Bottom

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

Women's Active Crop Bra

Men's Classic Thermal Merino Base Layer Crew

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

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

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

Women's Classic Thermal Merino Base Layer Crew Plus Top

Men's Brief

Men's Intraknit Thermal Merino Base Layer Colorblock Crew Top

Men's Classic Thermal Merino Base Layer Colorblock Crew Top

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