3 sizes of dog toothbrushes: Suitable for all Small Medium Large Dogs. Choose the right size based on the size of the dog. Made of high quality rubber, nontoxic ,durable, 360-degree bristle configuration, bite resistance and easy to clean Innovative Design - This dog toothbrush provides an innovative 360-degree bristle configuration and bite resistance to allow you to more easily care for your dog's teeth. Your pet dogs easy to hold the toothbrush to chew by stabilizing base . 100% Satisfaction: 60 Days money back guarantee. Simply contact us through your order history if you have any question, or if you are not satisfied for any reason and we will replace it or issue you a full refund.