eaction Ball is perfect for improvement of hand-eye coordination and reaction time. Volley the Reaction ball between two athletes, or rebound it again a wall. Upon landing, the ball will bounce in an unpredictable manner. Repeating these steps will improve your speed and  the winning edge in sports is often a matter of mastering the basics: quick feet, rapid change of direction, and sharp hand-eye coordination. the Reaction Ball will help improve performance in almost any sport.