Under Armour Threadborne T Shirt In Black, A classic fitted lightweight t shirt with a ribbed crew neckline and short sleeves. The signature Under Armour logo is situated on the left of the chest in grey with an additional Under Armour logo on the reverse of the neck also in grey. This t shirt is constructed from a HeatGear fabric to wick sweat away and keep you cool and dry. 100% Polyester. Brand New Under Armour T Shirts, Polo T Shirts And Shirts Collection Live Online UK.