Water polo balls are designed for both amateur and expert players. Polo balls are available for individuals of all ages as well. They often include a ribbed texture to help you maintain a firm, comfortable grip at all times. Water polo balls may feature deep seams and a treated cover. Additionally, polo balls typically come in a variety of colors and sizes. Each polo ball is intended for use during games and practices. Polo balls are generally constructed from rubber, and as such, will maintain their appearance for an extended period of time. Various balls are sold with a manufacturer's warranty.