This racerback tank is very important. 4.3-ounce (145 GSM) 100% combed ring spun cotton, 34 singles 60/40 combed ring spun cotton/polyester (Heathers, Frost) Tear-away label Self-binding at neck and armholes Gathered back detail Curved hem Please note: All heather colors (except for Light Heather Grey) in this product are transitioning from a 50/50 cotton/polyester blend to a 60/40 cotton/polyester blend. Your order may contain a combination of both contents.