GoughNuts Dog Toys consistently rate as one of the most durable toys you can find.  The Rings and sticks are made in the USA from special carbon rubber that can float, roll, and bounce. A patented safety indicator shows green when it’s safe to chew and red when it’s time to replace the toy. Why DogTuff loves them – their lifetime guarantee and simple safety system make them a go‑to for the toughest power chewers.