I have one for show jumping. I have the childs 32" I'm a size 8 and it is generous but fitted (if that makes sense?) round the body and just right length wise, I tried the 30" and it was more fitted round the body but to short in the arms and would have been to tight to ride in looking back. I tried the adults ones to but they were too long and I would have been sitting on it. But at 5'2 it is expected that most adult things are too long