Colorado Rocky Mountains and Sun - Colorado 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 Colorado Rocky Mountains and Sun t-shirt is perfect for anybody who loves Colorado, Denver, Aspen, Steamboat, Vail, or Breckenridge. Lightweight, Classic fit, Double-needle sleeve and bottom hem