4.5 oz./yd² (US) 7.5 oz./L yd (CA), 100% U.S. ring-spun cotton, 30 singles Heather Oatmeal is 99/1 cotton/polyester Antique colors & Sport Grey are 90/10 cotton/polyester Dark Heather & Heather colors are 65/35 polyester/cotton Graphite Heather is 50/50 cotton/ polyester Made with our soft ring spun cotton and cotton blends, Softstyle's double pique fabric is breathable and ideal for embroidery Modern classic fit Narrow width, rib collar Taped neck and shoulders Tear away label Natural is not a dyed fabric, the specks that you see are fibers and cotton seeds. Responsible Supplier:  this product was made in a facility that is OEKO-TEX and FLA certified. Responsible Materials:  contains US grown BCI cotton