The Storm Core Power HRG 13 lb Bowling ball is a high-performance ten-pin bowling ball made with reactive resin material. It features a multicolor pearl reactive coverstock and a symmetrical core type. Designed for high performance on any lane condition, this ball is officially approved by the United States Bowling Congress (USBC) and is drilled, allowing for customization to suit the player's style. This bowling ball offers quality and reliability for serious bowling enthusiasts.