Red and Blue Line Tattered Reflective 4.50 x 2.50" Sticker Flag Firefighter Police Emt Paramedics 3m United States Flag Sticker WARNING - Buyer Beware. Only Blueline products purchased from seller K9KING are the real and genuine items listed. K9KING is the Brand Registered Owner and Manufacturer of Blueline Products. We're the only authorized seller of Blueline. Buy with confidence from K9KING. The Thin Blue Line is a symbol in use in the United States and Canada by law enforcement officers The thin Red Line is a symbol in use in the United States and Canada in support of the fire department 4.50" x 2.50" Sticker Honoring the hero's of our communities. Reflective Red and Blue Line 3m vinyl, can be seen both day and night. Great gift idea Veteran and Small Family Owned Business.