3 Pcs Sound Toy Balls for Dogs Indestructible Bouncing Solid And Tough Rubber for Training Three pieces in a pack Funny squeak: The squeak will make your dog more excited. Irregular beat: The shape of the ball is special, so there are no rolling and rebound rules, it is difficult to judge where the ball will stop, so train the dog. Use rubber food grade to keep dogs safe. The soft material can protect the dog’s teeth during grinding. The maximum thickness of the pet ball is 0.8cm to ensure that it will not be easily damaged by the dog.