Sport-Thieme Water Polo Official – designed for demanding water sports. The Sport-Thieme Water Polo Official is specifically developed for competition and offers excellent playing characteristics even during training. Thanks to its rubber surface with a unique ribbed pattern, it is particularly grippy and feels great in the water. Its signal colors of red and yellow ensure that it is always highly visible to players. The nylon carcass with a laminated butyl rubber bladder and the special valve prevent air from escaping prematurely. This ensures you always enjoy optimal playing quality. Color: Red-Yellow, Yellow-Red • Material: Special rubber • Bladder: Butyl rubber • Circumference: 61-63 cm • Weight: 340-380 g • Diameter: 19 cm.