Rival Kingdoms: Insignia of The Ruin T-Shirt (Blue) Solid colors: 100% Cotton; Heather Grey: 90% Cotton, 10% Polyester; All Other Heathers: 50% Cotton, 50% Polyester Imported Machine wash cold with like colors, dry low heat Official "Rival Kingdoms" T-Shirt Lightweight, Classic fit, Double-needle sleeve and bottom hem