4.5 oz./yd² (US) 7.5 oz./L yd (CA), 100% U.S. ring-spun cotton, 30 singles Antique colors & Sport Grey are 90/10 cotton/polyester Dark Heather & Heather colors are 65/35 polyester/cotton Made with our soft ring spun cotton and cotton blends, Softstyle's double pique fabric is breathable and ideal for embroidery Semi-fitted Narrow width, rib collar Taped neck and shoulders 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