A very important tank. 4.3-ounce (145 GSM)100% combed ring spun cotton 34 singles 60/40 combed ring spun cotton/poly (Frost) 90/10 combed ring spun cotton/poly (Light Heather Grey) Tear-away label 1x1 rib at neck and armholesPlease note: All heather colors (except for Light Heather Grey) in this product are transitioning from a 50/50 cotton/poly blend to a 60/40 cotton/poly blend. Your order may contain a combination of both contents.