Includes one pack of 50 stickers. Our Thin Blue Line (USA) flag stickers are great for games, rewards, incentives, education, envelope seals and souvenirs. Self-adhesive 1"x1.5" high quality stickers 50 per pack The Thin Blue Line Flag originated in the United Kingdom: the blue line represents law enforcement, the black field on the top represents the public while the black field on the bottom represents the criminals.The idea behind the graphic is that law enforcement (the blue line) is what stands between the violence and the would-be victims of crime.The Thin Blue Line USA flag incorporates the American flag into the Thin Blue Line concept.