A treasure trove of chewing! Stuff KONG Goodie Ribbon?s four spaces with treats and the Goodie Gripper? ridges inside make getting the nibbles out a mentally challenging puzzle for dogs. Durable KONG Classic Rubber satisfies natural chewing instincts while providing a durable solution that keeps dogs engaged. Ideal for stuffing with KONG Easy Treat, KONG Snacks of a dog?s favorite kibble.