The PetSport Giant Tuff ball will allow your dog to play for long time with your or by himself. It is nonabrasive on your pet’s teeth. The non-staining outer polyester cover ensures that it does not leave any stain on your carpet or upholstery. It has a thick rubber wall that helps to maintain the durability of the product and gives it a better bounce. This is an industrial strength ball so your pet has to put that additional effort to take this down. The cover is nontoxic and will not harm your pet in any way.