Shop Base Layer Clothing @ Bristlecone Mountain Sports

Women's Classic Thermal Merino Base Layer Crew Top

Women's Classic Thermal Merino Base Layer Bottom

Men's Cap MW Bottoms

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

Men's Classic Thermal Merino Base Layer Crew Top

Women's Cap TW Bottoms

Women's Cap MW Crew

Men's Cap TW Bottoms

Men's Classic Thermal Merino Base Layer Bottom

Men's Vibe Xtra Soft Comfort Boxer Briefs

Men's DropTemp Cooling Mesh Boxer Briefs

Men's Multi-Sport Mesh Boxer Briefs

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

Men's Volt Breathable Mesh Boxer Briefs

Men's Quest Quick-Dry Mesh Boxer Briefs

Men's Ultra Super Soft Boxer Briefs

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

Men's Classic Thermal Merino Base Layer Crew Top

Men's Intraknit Thermal Merino Base Layer Colorblock Crew Top

Men's Classic Thermal Merino Base Layer Hoodie

Women's Thermal Merino Rib Turtleneck

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

Men's Cap MW Zip Neck

Women's Cap MW Bottoms

Women's 200 Oasis LS Crewe

Men's Cap TW Zip Neck

Women's Cap MW Zip Neck