When winter comes you need workout gear made with a fabric that is custom designed to keep you warm and dry, that's why Under Armour® invented the Evo ColdGear® Mock. For total body warmth pair with Under Armours ColdGear® Tight. Fabric feels soft next to skin. Ultra-brushed interior traps more warmth. Flatlock stitching. ColdGear® fabric. - Transports moisture to keep you dry and traps heat to keep you warm. 89% Polyester / 11% Elastane. Imported.