Crafted from ring spun cotton for ultimate comfort. 4.3-ounce (145 GSM) 100% combed ring spun cotton, 34 singles 60/40 combed ring spun cotton/polyester (Heathers, Frosts, Neon Pink) 90/10 combed ring spun cotton/polyester (Light Heather Grey) Slightly slimmer body and shorter sleeves 1×1 rib knit neck Tear-away label Shoulder to shoulder taping 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.