A treasure trove of chewing! A unique bone shape and durable KONG Extreme Rubber satisfies and rewards natural chewing instincts while providing a long-lasting solution that keeps dogs engaged. Stuff KONG Extreme Goodie Ribbon’s four spaces with treats and the Goodie Gripper ridges inside will make getting the nibbles out a mentally challenging puzzle for dogs. Ideal for stuffing with KONG Easy Treat, KONG Snacks or a dog’s favorite kibble. Durable KONG Extreme Rubber for extended engagement Unique bone shape fulfills & rewards chewing instincts Four stuffable Goodie Grippers for a varied mental challenge Medium 2.5\" x 7\", Large 3.25\" x 8.5\"