Really impressed by the durability and how well it flies! We have a boxer/shepherd/akita cross with giant teeth one broken (extra sharp) canine and she can destroy 'durable' toys in minutes. We call her The Mulcher. Normally we have to very carefully police her when we are playing because she'll chew up her toys, but after a number of times out the disk isn't showing any tooth marks. If given a choice between this disk and her other (cheaper) disk, she'll happily take this one. We'll definitely be buying more toys from this line!
The only mishap happened the first time out. She managed to drop it in a mud puddle then trample it in. It took us 2 different trips to dig it up. I guess is doesn't float in prairie mud very well :)