Shop Base Layer Clothing @ Mountain High Outfitters

Men's Classic Thermal Merino Base Layer Bottom

Men's Cap MW Zip Neck

Men's Cap MW Bottoms

Women's Classic Thermal Merino Base Layer Bottom

Men's Cap TW Bottoms

Men's Ultra Super Soft Boxer Briefs

Men's Vibe Xtra Soft Comfort Boxer Briefs

Men's DropTemp Cooling Cotton Boxer Briefs

Men's Multi-Sport Mesh Boxer Briefs

Men's Quest Quick-Dry Mesh Boxer Briefs

Men's Classic All-Season Merino Base Layer Bottom

Women's Thermal Merino Rib Turtleneck

Women's Classic Thermal Merino Base Layer Bottom Plus

Men's DropTemp Cooling Mesh Boxer Briefs

Women's Cap MW Crew

Women's Cap MW Bottoms

Women's 200 Oasis LS Crewe

Men's Kinetic Light-Compression Mesh Boxer Briefs

Women's Cap TW Bottoms

Women's Cap MW Zip Neck

Men's Cap TW Zip Neck

Women's Cap TW Zip Neck

Women's 200 Oasis Leggings

Men's Merino 260 Tech LS Crewe

Men's Quest Quick-Dry Mesh Open Fly Boxer Briefs

Women's 200 Oasis LS Half Zip

Men's 260 Tech LS Half Zip

Women's Classic Thermal Merino Base Layer Pattern Crew

Women's LIFA Base Layer Pants

Men's GNG 2.0 Boxer