8.9 oz./yd²., 100% USA cotton, 18 singles; Heather Grey is 90/10 USA cotton/polyester; Charcoal Grey is 50/50 USA cotton/polyester; Heavyweight waffle knit; Forward-thrusted shoulder seam for comfortable neck fit; Shoulder-to-shoulder neck tape; 1" double-needle stitched bottom hem; Ribbed wrist cuffs; 1" neck ribbing; Woven neck and side-seam labels;