X-830 WISH tennis balls are pressurized, high quality tennis equipment, intended for all kinds of courts. They are very durable and they maintain optimum performance for a long time due to a special production process, within which two halves of the ball are being stick together, under very high pressure. X-830 WISH tennis balls are designed for advanced players.Brand : Wish,Model : Tour-X830, Balls are pressurized and are engineered for better performance, For all court surfaces, Extra duty felt by Milliken &Tube of 3 tennis balls.