The Thin Blue Line and Thin Red Line are symbols of respect and support for Police, Law Enforcement Officials and Firefighters; show your support with the Rothco's Thin Blue Line & Thin Red Line Flag, which measures 3' x 5', is made from a non-shiney polyester material. The Blue and Red Line Flag is a double stitched US Flag with a blue and red line across the middle. The TBL/TRL Flag looks great on a flagpole or in a window.