Gildan Ultra Cotton 6 Oz. T-Shirt 100% Cotton 100% preshrunk cotton. Seamless collar and double-needle stitching throughout. Taped shoulder-to-shoulder. Ash Grey is 99/1 cotton/poly;Sport Grey is 90/10 cotton/poly. Dark Heather and Heather Navy are 50/50 cotton/poly. Heather Cardinal and Heather Indigo are 50/50 cotton/poly. Safety Green and Safety Orange are 50/50 cotton/poly.