Thin Blue Line Reflective 3.75 X 2.25 Decal Sticker United States Us Flag Tactical Police Law Enforcement Measures (3.75 inch) X (2.25 inch) 3M Reflective vinyl ULTRA HIGH QUALITY vinyl - 10 YEAR OUTDOOR LIFE! The Thin Blue Line is a symbol in use in the United States and Canada by law enforcement officers and others exclusively made and sold by EMPIRE TACTICAL USA, Seattle WA