5.3 oz./yd² (US) 8.8 oz./L yd (CA), 100% U.S. cotton, 20 singles Sport Grey is 90/10 cotton/polyester Dark Heather, Graphite Heather, Heather colors are 50/50 cotton/polyester Innovation you can feel. Made with 100% U.S. cotton and the latest breakthrough in soft cotton technology, the Gildan® Heavy Cotton family has been remastered for improved printability, quality and comfort you can see and feel. Semi-fitted Narrow width rib collar Taped neck and shoulders Cap sleeves Side seams Tear away label Responsible Supplier:  this product was made in a facility that is OEKO-TEX and FLA certified. Responsible Materials:  contains US grown BCI cotton