Thanks to ColdGear technology, Under Armours Mens Base 3.0 Crew helps you stay warm on your wintry adventures. Lightweight 92/8 polyester/elastane construction keeps you comfortable all day long. Ergonomic seam placement enhances comfort, while flatlock seams virtually eliminate chafing. ArmourBlock odor-fighting treatment. Fitted. Imported. Sizes: S-3XL. Color: Black/Steel. Type: Base Layer Tops.