Color: Red; Material: Silicone rubber; Diagonal Diameter: 67mm / 2.64 inch; Size: 57 x 57mm / 2.24 x 2.24 inch(L*W); Packing List: 1 x Reaction Ball Advantage: The hexagonal reaction ball is made of comfortable material with a good hand grip, strong and durable, and suitable for hard surfaces. The rebound angle of the reaction ball is large and the rebound speed is fast. 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 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. When falling vertically, the bouncing height can reach 1 meter. When thrown hard, the bounce height can reach 2 meters.