Tee features include: 4.5 oz./yd², pre-shrunk 100% ring-spun USA cotton, 30 singles, Heather Grey is 90/10 ring-spun cotton/polyester, Other Heathers are 50/50 ring-spun cotton/polyester, Reactive-dyed for longer lasting color, Ribbed crewneck collar, Back neck tape, Shoulder-to-shoulder taping, Side seams for sizes 4XL and 5XL, Double-needle stitching on sleeves and bottom hem, Tear away label, USMCA certified.