The Dunlop Championship balls are high quality and durable to meet the most exacting demands of both the recreational and serious player. They have specifically been designed and engineered for U.S. players and courts. Now with Dunlop’s breakthrough Durafelt cloth technology, players can have a longer lasting ball without sacrificing playability. The Regular Duty version of the ball is made with less felt so it can be played on clay or indoor courts. Also available are the Dunlop Championship All Court tennis ball that can be played on all types of courts or a Dunlop Championship Hard Court tennis ball with more felt for hard courts. The Dunlop Championshipis USTA and ITF approved for tournament and league play.