Biohazard Radioactive Symbol Old Vintage Rusted Sign T-shirt 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 5 colors to choose from. Chernobyl Radioactive symbol rustic sign. Lightweight, Classic fit, Double-needle sleeve and bottom hem