The JW Rockin Treat Ball is a modern ball that rocks, rolls, and slides while dispensing treats for hours of fun. This playful learning activity toy has a tough certified non-toxic nylon frame with creatively styled openings that can withstand even the toughest of chewers. The Inner Treat tube holds treats and the open frame makes it easy for dogs to pick up the ball to carry or fetch. Holds up to rugged long-term play. Treats go inside the tube and to add an extra bit of fun. Simply press palms firmly on both ends to twist and loosen, place treats or kibble inside the treat tube, screw the cap closed and you're ready to start the fun with your dog! Product note: Treat Ball Toys for dogs are not designed to chew toys.