I have spent so much money on various toys and balls. My male Australian Cattle Dog managed to destroy everything I gave him, and what he wasn't interested in destroying, my female ACD would take on. I have spent literally hundreds of dollars on toys that last an hour, if I was lucky. This has been such a life-saver. He can carry it around with him, hold it in his mouth and chomp it, and use it for a game of fetch. He's also learned to flip it out of his mouth with a spin so it bounces for him on the hard floors and he can entertain himself. The only reason I've had to replace the ball is because the dogs lose them. I know I always have a sturdy, safe toy for him to play with. Thank you so much for your wonderful product!!