A-boards, also known as sandwich boards, are a popular form of outdoor advertising that consists of a freestanding signboard with a message on both sides. They are designed to be placed on sidewalks or other high-traffic areas to attract the attention of potential customers. A-boards come in a variety of sizes and materials, and can be customized with a range of graphics and messages. They are typically made from materials such as metal, plastic, or wood, and can be easily transported and stored when not in use. A-boards are a cost-effective way to promote a business, event, or sale, and can be used by retailers, restaurants, and other businesses to attract foot traffic and increase visibility.