Bella 3480Y Youth Jersey Tank 100% combed and ringspun cotton 4.2 oz., 100% airlume combed and ringspun cotton, 32 singles. Athletic Heather is 90/10 airlume combed and ringspun cotton/polyester. Dark Grey Heather is 52/48 airlume combed and ringspun cotton/polyester. Neon colors are 3.6 oz., 52/48 airlume combed and ringspun cotton/polyester, 40 singles.