City covering a wide audience linear cross media focused long-distance buses to become a network, covering all areas of the city, bringing a broad advertising coverage. The difference between the number of advertising and local environment, and other aspects of urban area, the city's exposure to different frequency vary. For a particular city, bus advertising high frequency, close contact with the target audience, so that it reaches a higher rate in many outdoor media. Sandwich is a synthetic material. The biggest advantage of this material is durable automotive advertising caps, and very easy to clean, check inside the machine on the washing machine to wash down the line. Blended material is also very strong car media advertising caps, but it feels a little stiff compared to the sandwich material a little. Cleaning is also very simple, put the washing machine on the line, but the best way is to dry cleaning. Price caps leather material is more expensive advertising, but its advantage is also apparent that beautiful bus advertising caps, cleaning simple. Finally is the most expensive material of genuine leather. Maintenance is simple, easy to crack, more atmosphere.