Advertising Flags and Banners have many different shapes and sizes available for different types of event. Most of these promotional banners come with custom printed graphics that are supplied by the customer. What exactly is an advertising flag? Generally speaking, they are any type of banner that is used to promote a product or service. Advertising flags are also commonly used to announce an upcoming event such as a local festival or fair. Automotive dealers use these custom banners to inform customers where on the lot certain makes and models of cars are located. These flags for advertising are becoming and increasingly popular method of promoting among companies and large corporations.