Pet Qwerks Toys tire toys are perfect for dogs who love to play fetch. Made of two big tires molded together, your dog’s teeth have the grip they need to carry the X Tire Ball anywhere. We made these balls accessible for all dogs and all lifestyles. Each X Tire Ball has a hollow center that contains either a Babble Ball, a Blinky Babble Ball, or a Jingle Ball. So whether you’re playing with your dog late into a summer night or after a big snow, your dog will be able to find their favorite fetch toy anywhere.