Color: Green; Material: TPR; Size: 47 x 47 x 55mm / 1.85 x 1.85 x 2.17 inch(L*W*H); Packing List: 2 x Reaction Ball Advantage: The hexagonal reaction ball is made of high-density material, strong and durable, suitable for hard surfaces. The surface is grainy and has a good hand grip. This six-sided high-strength ball jumps and pops randomly, creating a dynamic and bounce that can't be known, allowing you to better analyze player contact with the ball based on interaction. Use the reaction ball to improve hand-eye coordination and agility for faster reflex. Reaction balls are good training equipment for sports Instruction: Use the agility training ball by tossing it back and forth between players, or bouncing it off the wall for independent training indoors or outdoors. Application: The reaction tool provides feedback on a player's reaction time and is a high-energy, multi-sport training tool used to improve technique in drills and training exercises. Note: Please use this product without passers-by or in a safe outdoor environment.