Gamma First Set Reflex Ball:

The Gamma First Set Reflex Ball is a larger soft rubber version of the Gamma Reflex Ball. It is a six-sided ball that bounces, pops up and leaps unpredictably in different directions. Ideal for children who want to aggressively chase this tricky-to-catch ball because they won't get hurt if the ball hits them. Use it as a training tool to develop lightning fast footwork and reflexes.

Need help? Find answers in the Tennis Buyer's Guide