4.2 oz./yd2 (US) 7 oz./L yd (CA), 52/48 Airlume combed and ringspun cotton/polyester, 32 singles. Athletic Heather & Black Heather are 90/10 airlume combed and ringspun cotton/polyester. Heather Prism colors are 99/1 airlume combed and ringspun cotton/ polyester (Unique coloring, grey flecks of heather pulled through the base color). Retail fit. Unisex sizing. Coverstitched collar and sleeves. Shoulder-to-shoulder taping. Side seams. Tear away label.