The JW? Hol-ee Roller? Egg dog toy plays off the do-it-all concept of the best-selling Hol-ee Roller to keep dogs engaged and entertained in a wide variety of ways. Fetch, treat and even tug! Stuff the center cavity with a squeaky ball or treats to create a challenging puzzle for your dog. Made of durable rubber. Small and medium sizes are suitable for a wide variety of dogs. Available in assorted colors - green, blue and orange.