It is made of quality TPR material, non-toxic and BPA-free, it ensures your dog can play and chew it safely, and easy to cleanUsing saw-tooth surface design, fit the tooth shape of the dog, help clean teeth and prevent plaque and tartar build up, and better maintain dogs' oral healthYou can add treats or snacks into the grooves. Your dog can get more surprises and will be willing to spend more time playingThe toy can keep your dog mentally and physically active while they play. It absolutely the best toy to help with boredom and anxietyIt is convenient to train dogs as it can easily attract your pet's attention. It also can be used as a dog fetch play ball for outdoor gamesIt is great for most size of dogs allows you or your family to interact with your dog, let your dog become more lively, and enjoy the fun and at the same time increase the feelings of you and your dog Specification: Diameter: 6cmMaterial: TPR Package included: 1 x Interactive Dog Chew Toy Other things not included