The Dunlop Stage 2 orange mini tennis balls are approximately 50% slower than a standard tennis balls to give you more time to prepare a return shot and help you gain more confidence while playing. They are designed for those who are new to the game and want to improve performance on the court. The balls are easy to hit thanks to a lower bounce and pressure which makes them perfect for coaching and training. Additionally, they offer improved shot control and have the International Tennis Federation (ITF) approval. The balls are supplied in a 5-dozen pack (60 balls).