1.Shape: round; Diameter: 7cm; Weight:135~140g. 2.Material: pure natural non-toxic rubber ,Suitable for Medium， large pets to molar tooth. 3.The pet toy ball can be the active atmosphere, excluding boredom and irritability, the owner can use it with the love pet to interact, enhance the feeling of the best choice, the dog must love. 4.You can put food into the gap between the product so that dogs eat interesting, the dog will be more love. The ball can help dog for cleaning tooth and strong teeth. 5.Four colors for your choice: yellow, green, blue, red.