Ash, Athletic Heather, L, M, S, XL - Blank. Port & Company (R) Essential Adult T-Shirt. A year-round essential, our best-selling t-shirt has been voted 'most popular' by groups, teams, clubs and schools across America. Heavyweight 6.1-ounce, 100% soft spun cotton. Shoulder-to-shoulder taping. Coverseamed neck. Double-needle sleeves and hem. Ash is 99/1 cotton/poly. Athletic Heather is 90/10 cotton/poly. Dark Heather Grey is 60/40 cotton/poly.