... rubber We specialize in manufactureing bouncing ball with novel design, advanced technology and competitive pricespicture ball, 1) have different size and design ... do customized color and logo, 3) safe and healthy,picture ball,1)Material: synthetic rubber,2) size: 22mm 27mm 30mm 32mm ... ,3) color: can be customized color,4) picture inside the ball can be changed,5)EN71 and ASTM test are available ...