5.3 oz., 100% 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; Non-topstitched, classic width, rib collar; Taped neck and shoulders; Ribbed cuffs; Double-needle bottom hem; Tear away label; Gildan’s manufacturing process utilizes 45% renewable energy; Gildanís Community Investment Program supports education, the environment, humanitarian aid and active living in the communities we do business in;