The material of the ball and is ABS, which is safe and non-toxic. Playing the and capture game will be good for your body. It helps develop hand-eye coordination skills. A kind of good relationship game between parents and children. the back strap is adjustable. Descriptions: The ball and are made of ABS, and it is safe and non-toxic. Children can for , which can develop the hand-eye coordination skill. Playing is a good way to form a good relationship between parents and children. Colour:Red + green Material:Plastic + nylon Size:Sticky diameter 18 cm Hard ball diameter 6.5 cm Package Contents: 1*Ball 2*Bats Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.