2 things wrong with the flyer1. its so heavy it flies like a discus which makes it fall to fast for the dog to get under it and jump/catch which is the whole point. also hard and tiring to throw2. even though its so heavy my golden (who is not a big chewer) had one edge ripped up from trying to pick it up off the grass...we have much better luck which plain old frisbees and they last a month or so