Color: As shown; 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 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 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. 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.