Best dog frisbee out there! I have a very destructive dog that can destroy all other frisbees in one or two sessions......he can keep the zisc intact for 3-4 months, however. I should mention that he isn't really allowed to chew on it, but he has a bad habit of folding it in half, which eventually creates a crack in the middle....then he rips it all apart. This frisbees flies well (unless the middle is torn out - lol) and is easy on their mouth.