The outside of the ball is made of high quality latex, non-toxic and eco-friendly, good safe for your dog’s health. It is strong and durable, good bite resistant. L The interior is padded with cotton so that the ball can recover its shape easily.Diameter of the ball: 6cm The surface of the ball has small points which can clean the teeth when the dog bites the ball . The sound ball when being pressed, which can attract dog’s attention. Can be used indoors and outdoors, well strengthen the relationship between dogs and their owners . Two shapes to choose from: football shape; rugby shape according to your needs.