This magnetic car flag is single reverse and is an effective alternative to a traditional window style car flag. Place the strong magnetic base directly on a flat metal surface to attach. The magnetic base is coated and will have a firm grip on your car at speeds of up to 80 miles per hour. It comes in both single and double sided versions, and there is no limit to the number of colors that can be used. Put it to use in a variety of promotional events and occasions!