The Donic-Schildkröt Jade table tennis balls offer excellent performance at great value. They are perfect for beginners, club training along with school and leisure play. This 12 pack includes six white balls and six orange balls. Schildkroet is considered to be the inventor of table tennis balls and developed the blow-press method for the production of the popular celluloid ball as early as 1896. These Poly 40+ quality table tennis balls have a 40mm diameter and are branded with the Donic-Schildkröt name.