100% Cotton, 7 OZ, Welders Tested T-Shirt for welder, biker, and more, Arclabs 7 oz. 100% Cotton made. Welders Test Good. Comfortable to Wear And EASY to Care Designed for comfort and made to last in the toughest environment Dark Grey Color, Anti-Dirt color Double-needle bottom hem and sleeves Preshrunk to minimize shrinkage