"TUFF" with NO STUFF! Extremely Durable Dog toy with no "Stuff" in the center! Extremely Durable Ultimate Dog Toy with the same great Ultimate Construction but with NO "Stuffing" in the center! Great for interactive play with one or multiple dogs. It can be used as a Frisbee or a tug toy on land or in the water. Great for flyball training! Easy to toss and Great For Indoors! Washable! And Floats! The soft edges won't hurt gums.