A diving platform or diving tower is a type of structure used for competitive diving. It consists of a vertical rigid "tower" with one or more horizontal platforms extending out over a deep pool of water. In platform diving, the diver jumps from a high stationary surface. The height of the platforms - , and - gives the diver enough time to perform the acrobatic movements of a particular dive. There are additional platforms set at and . Diving platforms for FINA sanctioned meets must be at least long and wide. Most platforms are covered by some sort of matting or non-slip surface to prevent athletes from slipping.