DETROIT ROCK CITY MICHIGAN USA United States 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 DETROIT - ROCK CITY - MICHIGAN - T-Shirt for Men & Woman The Motor City, Motown, Hockeytown, Rock City, The D Lightweight, Classic fit, Double-needle sleeve and bottom hem