7.5 oz. 100% USA cotton, 16 singles; Heather Grey is 90% USA cotton/10% polyester; Charcoal Grey is 50% USA cotton/50% polyester; 3.5% lycra neck rib; 7 oz. 100% USA cotton, 16 singles; 2% lycra neck rib; Shoulder-to-shoulder neck tape and double-needle stitched neck; 1" double-needle stitched sleeve and bottome hems; 1" stretch-proof neck collar with satin/woven label; Heavy-duty knitting; Forward-thrusted shoulder seam for comfortable neck fit; Oversized/Relaxed with slight drop shoulder streetwear fit; Quarter-turned to eliminate center crease