Undershirt Under Armour Gl Foundation Ss T. Men's Short sleeve tee in a loose cut from the original Heatgear material, suitable for all sporting activities. Durable, breathable and very pleasant material with a large proportion of cotton. The materials used dissipates moisture and thus dries faster. Under Armour printed Design on the chest. Technology: Moisture Transport System (Wicks sweat away from your body to the surface of your clothes, making it easier to dry and keep you safe longer). Material: 60% cotton, 40% Polyester