"Random Bounce - The random bounce design can effectively improve reaction ability and hand-eye coordination, shorten the reaction time of training.Training for Various Sports - The multifunctional reaction training ball can be used to train various sports, such as baseball, softball, basketball, football, volleyball, etc.Solo or Partner Training - Train alone by throwing the reaction ball against the wall or practice with a partner with extreme and unexpected flight paths.High Density, High Flexibility, High Durability - The reaction ball is made of high-density rubber with high elasticity and durability.Fun Things - It's more fun than any ball you've played with before. Unsafe jumping directions require high concentration to catch them."