4.5 oz./yd², pre-shrunk 100% ringspun USA cotton Heather Grey is 90/10 ringspun cotton/polyester Other Heathers are 50/50 ringspun cotton/polyester Reactive-dyed for longer lasting color Ribbed crewneck collar Back neck tape Shoulder-to-shoulder taping Double-needle stitching on sleeves and bottom hem Tear away label USMCA certified