Over the past four years I have tried numerous products (dog chew toys). These bones of your are the only ones that stand up to my dogs chewing. The first ones I tried lasted about a year and a half. The next two have lasted almost THREE YEARS. I couldn't have had a better result. My dogs love the toys. I have one part great dane and Doberman mix and one Great dane. Needless to say they give these bones a work out.
Congratulations on such a fine product.