Extrawheel's patent is a mobile billboard that is towed behind a bicycle. This creative advertising product gives you a huge return for your investment, especially when compared to more traditional and expensive marketing techniques. Extrawheel's can go anywhere your bike can and therefore is a very flexible form of advertising. It is a practical and cheap banner that is suitable for any company. Once you have made the initial purchase you can start advertising your company straight away without having to pay for its exposure. Watch the film to see how is work.