This ring toy had already passed testing, with flying colors, some robust tug and fetch play, along with a little bit of supervised gnawing. Then, along came a fellow named Graham, who "went to town", gnawing relentlessly on one of the toys in Doghoztoyz' regular product line. (which are not designed for continuous gnawing.) I said, "... let's try Graham's Ring," and it held up much better!
Graham's Ring, which is the same diameter as the "Tugger's Ring" toy (8 inches diameter) is built from two layer, 2 inch retired fire hose. Color will vary; sometimes green and white hose is available, sometimes yellow or white is available.
This toy should still be used for supervised interactive tug and fetch play and will tolerate some gnawing. It does NOT come with squeakers, is heavy (Tugger's Ring weighs 5.6 oz, Graham's Ring weighs just shy of 1 pound), so only large breed adult dogs should play with this.