A skimboard is a board that is used for skimboarding. They are similar to surfboards, but thinner, denser, and do not have fins. Originally, skimboards were made of wood. Today, high-performance skimboards are made with and a foam core encased by lighter and stronger materials like fiberglass and/or carbon fiber, solidified by resin. High-performance skimboards allow a rider to reach shorebreak and ride waves.