6 oz./yd² 100% USA cotton, 18 singles; Heather Grey is 90/10 USA cotton/polyester; Charcoal Grey and Safety Green are 50/50 USA cotton/polyester; Shoulder-to-shoulder neck tape; Classic fit; Forward-thrusted shoulder seam for comfortable neck fit; 1" double-needle stitched sleeve and bottom hems; 7/8" Seamless non-topstitched collar; Quarter-turned to eliminate center crease; Tear away label;