I get these for my dog and he loves them.  The lip is a little softer than a real Frisbee.  Surprisingly even after being very chewed up the Frisbee will still fly pretty well.  I have a German shepherd and he is very hard on toys.  I used my last one about 4-5 months very heavily with the dog before buying this one.  Most other Frisbee were gone in a month even the ones made for dogs.