Shop Smartwool Base Layer Bottoms

Men's Classic All-Season Merino Base Layer Bottom

Women's Classic Thermal Merino Base Layer Bottom

Men's Intraknit Thermal Merino Base Layer Bottom

Women's Classic All-Season Merino Base Layer Bottom

Women's Intraknit Thermal Merino Base Layer Bottom

Women's Classic Thermal Merino Base Layer Bottom

Women's Classic Thermal Merino Base Layer Bottom Plus

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

Men's Classic Thermal Merino Base Layer Bottom

Women's Merino Sport Fleece Wind Tight

Men's Classic All-Season Merino Base Layer Bottom Boxed

Men's Classic Thermal Merino Base Layer Bottom

Men's Classic Thermal Merino Base Layer Bottom

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

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 3/4 Bottom

Women's Classic All-Season Merino Base Layer Bottom

Kids' Classic Thermal Merino Base Layer Bottom

Men's Classic All-Season Merino Base Layer Bottom

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

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

Men's Classic All-Season Merino Base Layer Bottom

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

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

Women's Classic Thermal Merino Base Layer Bottom Plus

Women's Classic All-Season Merino Base Layer Bottom

Women's Active Biker Short

Men's Merino Sport Boxer Brief

Men's Intraknit Active Base Layer Bottom