Shop Base Layer Tops @ Bristlecone Mountain Sports

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

Men's Classic Thermal Merino Base Layer Crew Top

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

Women's Thermal Merino Rib Turtleneck

Men's Intraknit Thermal Merino Base Layer Colorblock Crew Top

Men's Classic Thermal Merino Base Layer Hoodie

Men's Classic Thermal Merino Base Layer Colorblock Crew Top

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

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

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

Women's Cap MW Crew

Men's Cap MW Zip Neck

Women's 200 Oasis LS Crewe

Men's Cap TW Zip Neck

Women's Cap MW Zip Neck

Men's Merino 200 Oasis LS Crewe

Women's Cap TW Zip Neck

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

Women's 260 ZoneKnit LS Half Zip

Men's Merino 260 Tech LS Half Zip

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

Women's Merino 200 Oasis LS Half Zip

Women's Merino 150 Siren LS Sweetheart

Men's Merino 200 Oasis SS Crewe

Women's Merino 260 Tech LS Crewe

Men Merino 200 ZoneKnit LS Half Zip

Women's Merino 260 Tech LS Half Zip