The Thin Blue Line is a symbol of respect and support for police and law enforcement officials. Show your support for police and law enforcement officers with Rothco Transparent Thin Blue Line Flag Decal. Vinyl sticker with adhesive back for easy and secure application. Transparent background means that the surface this sticker is placed on will show through 5 of the stripes and stars. The decal which measures 6 inch x 9 inch and features a gum back that can be applied to any clean, dry surface. Great for cars and home windows. Proceeds From This Purchase Benefit Families Of Fallen First Responders.