This responsive ball contains button battery, and there will be different lights when turning. The pattern design is stylish and clear, and it will change with the light flashing. Quality plastic material is safe and reliable, impact resistant and wear resistant. The gap between the bearings can easily cater for the players to perform various movements, making it easier for the toy to fall on the rope. Ideal toy for teens, a fun toy for people aged 12 and above, suitable as a birthday or holiday gift, and also can be applied to organize parties. 2 1/4" Diameter