Bella Canvas Unisex Jersey Short Sleeve Tee 100% Cotton 4.2 oz., 100% airlume combed and ringspun cotton, 32 singles. Athletic Heather and Black Heather are 90/10 airlume combed and ringspun cotton/polyester . Ash is 99/1 airlume combed and ringspun cotton/polyester. Alternate Heather CVC/Blend colors are 52/48 airlume combed and ringspun cotton/polyester .