65% polyester/35% viscose, 30 singles 3.7 ounce flowy scoop muscle tank. Low cut armhole. Curved bottom hem. Relaxed, drapey fit. (Ath. Heather 52% polyester/48% viscose. Marble colors 91% polyester/9% combed and ring-spun cotton, 40 singles 3.5 ounce)