So far, so good. I was given one for a visitor who is a chew master. Not a ding in it. My Borzoi use it as a tug toy as its just long enough. Gave one to a guest dog who enjoyed ours while here. I could use a ball of this quality with hole in to make a sound as it flies...they love to chew large strong rubber balls too. Tennis balls don't cut it...sorry for the pun.