If your pets love tennis balls, they will go insane over the rugged Air KONG Squeaker Dog Toys. Everything that made the tennis ball popular with dogs is built in, the only difference is that we've added a squeaker that dogs love. It's the fetch, fun, play, run, and smile toy Air KONG Squeaker Toys are just what they look like; 100% pure tennis ball material made in the same factory, using the same materials as any high-quality tennis ball. Constructed from non-abrasive tennis ball fabric that will not wear down dog's teeth. All squeaker units are recessed in rubber and covered with tennis ball fabric for safety.