Rothco Thin Blue Line & Thin Red Line T-shirt with U.S. FlagT Shirt features the American Flag with both Thin blue line and Thin red line Thin blue line shows support for Law Enforcement Thin red line shows support for our Firefighters Made of a soft 60% Cotton & 40% polyester blend The Thin Blue Line is a symbol of respect and support for Police and Law Enforcement Officials; the Thin Red Line represents camaraderie and sacrifice of firefighters and first responders to fires and disasters.