Shop Base Layer Clothing @ Mountain Sports Outlet

Men's Classic Thermal Merino Base Layer Crew Top

Women's Classic Thermal Merino Base Layer Crew Top

Men's Classic All-Season Merino Base Layer Bottom

Women's Classic Thermal Merino Base Layer Bottom

Women's Cap MW Crew

Women's Cap MW Zip Neck

Women's Cap TW Zip Neck

Women's Maipo 7/8 Tights

Women's Summit Pro 120 Crew

Women's Summit Pro 120 Tight

Women's Merino 250 Plant-Based Dye Logo Hoodie

Toddlers' Fleece Base Layer Set

Kids' Base Layer Tech T-Shirt

Men's LIFA Merino Midweight Base Layer Pants

Men's Burton Midweight Base Layer Pant

Kids' & Toddlers' Midweight Base Layer Set

Kids' Fleece Base Layer Set

Women's Midweight Base Layer Crewneck

Women's Midweight Base Layer Crewneck

Women's Lightweight X Base Layer Crewneck

Women's Fryd Baselayer Pants

Women's Midweight Base Layer Pants

Men's Midweight Base Layer Long Neck Shirt

Men's Midweight Base Layer Crewneck

Women's Burton Midweight Base Layer Pants

Women's Floke Wool Pant - 60% Merino Wool

Women's Midweight X Base Layer Pants

Men's Midweight X Base Layer Three-Quarter Boot Pants