Gildan Adult Heavy Cotton™ Long-Sleeve T-Shirt 8.8 oz./lin.yd.,100% preshrunk USA cotton; Ash Grey is 99% cotton, 1%polyester; Sport Grey is 90% cotton, 10% polyester; S. Orange,Safety Green & Graphite Heather are 50% cotton, 50%polyester; Made with sustainably and fairly grown USA cotton