Sturdy & Durable - Made of BPA-free natural rubber, the toy is non-toxic to ensure dogs can chew safely. The strongest solid tire shape has been carefully designed to attract dogs' attention. It is durable and nearly indestructible, making it very suitable for aggressive chewers. Tooth Massager - Strong tire outer ring can withstand tough chewing. With multiple grooves and cylindrical protrusions on the surface, a continuous chewing massage is given and can strengthen the jaw, cleaning teeth and reducing tartar, dog dental problems and saving money. Hollow Design - Fill the toy with food or snacks when the dog is playing, allowing the dog to eat while playing to add more fun. The tire groove and surface grain texture are suitable for peanut butter, nutritious cream, peanut butter or other moist food and prevent it from slipping, allowing your dog to concentrate on licking, avoiding biting, damaging furniture. Instinctive Needs - Healthy games are essential to the physical and mental development of the dog. This chew toy meets dog's instinctual needs and provides mental stimulation, relieves dog anxiety, kills boring time, reduces destructive chewing, digging, barking and maintains good posture. Quality Guaranteed - Our heavy duty chew toys have been tested and approved by Bulldogs, German Shepherds, M Dogs, Labrador Retrievers, Golden Retrievers and many other large endurance dogs. No dog toy is truly indestructible, but our model is very close and it's normal for it to start to wear out after long-term use. If you have any questions about our chew toys, please contact us in time.