Shop Smartwool Base Layer Clothing

Men's Classic Thermal Merino Base Layer Bottom

Women's Classic Thermal Merino Base Layer Crew Top

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

Women's Classic Thermal Merino Base Layer Bottom

Men's Classic Thermal Merino Base Layer Crew Top

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

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

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

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

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

Women's Classic Thermal Merino Base Layer Crew

Men's Intraknit Thermal Merino Base Layer Crew Top

Women's Intraknit Thermal Merino Base Layer Bottom

Women's Merino Blend Bralette

Women's Intraknit Thermal Merino Base Layer Crew Top

Men's Classic All-Season Merino Base Layer Bottom

Women's Classic All-Season Merino Base Layer Bottom

Men's Intraknit Thermal Merino Base Layer Bottom

Men's Classic Thermal Merino Base Layer Crew Top

Women's Active Leggings

Women's Classic Thermal Merino Base Layer Crew Plus Top

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

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

Men's Classic Thermal Merino Base Layer Crew

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

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

Women's Thermal Merino Rib Turtleneck

Women's Classic Thermal Merino Base Layer Bottom

Men's Brief

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