American Apparel Unisex Tri-Blend Short Sleeve Track T-Shirt Polyester, Cotton, Rayon Made of 3 unique yarns. Tri-blend offers a vintage-like look and feel with a slimming drape. Durable ribbed crew neckline. Reinforced taping at shoulder. Fabric: 50% Polyester, 25% Cotton, 25% Rayon.