4.5 oz./yd, pre-shrunk 100% USA grown ringspun cotton, 30 singles. Ash & marbled colors are 99/1 cotton/polyester. Light Steel & Red Pepper Heather are 90/10 cotton/polyester. All other heather colors are 60/40 cotton/polyester. Modern fit. Clean Canvas Technology for superior printability. Set-in narrower ribbed collar. Double-needle hem and sleeves. Shoulder-to-shoulder taping. Black tear away label.