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;Double-needle stitching throughout; Seamless rib at neck; Taped shoulder-to-shoulder; Ribbed cuffs; Gildan's manufacturing process utilizes 45% renewable energy; Gildan s Community Investment Program supports education, the environment, humanitarian aid and active living in the communities we do business in;