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.  Rothco's Thin Blue Line / Thin Red Line US Flag Patch that measures 1 7/8" x 3 3/8.  The nylon hook back allows the morale patch to easily attach to your favorite hat or tactical jacket.