Shop Base Layer Clothing @ REI - Boulder

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

Women's Intraknit Thermal Merino Base Layer Crew Top

Women's Classic Thermal Merino Base Layer Crew Top

Men's 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 1/4 Zippers Top

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

Women's Classic Thermal Merino Base Layer Bottom

Men's Merino 200 Oasis LS Crewe

Men's Classic All-Season Merino Base Layer Bottom

Women's Merino Blend 125 Cool-Lite Sphere LS Tee

Women's Merino 200 Oasis LS Crewe

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

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

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

Men's Classic Thermal Merino Base Layer Bottom

Women's Classic Thermal Merino Base Layer Crew Plus Top

Women's Cap MW Crew

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

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

Women's 200 Oasis LS Crewe

Men's Intraknit Thermal Merino Base Layer Crew Top

Women's Classic All-Season Merino Base Layer Bottom

Men's Merino 260 Tech LS Crewe

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

Women's Cap MW Bottoms

Men's 260 Tech Leggings w Fly

Men's 200 Oasis Leggings w Fly

Men's Intraknit Thermal Merino Base Layer Bottom

Women's 200 Oasis Leggings