You may not be an expert but you know more about Oakleys than the joker you bought that from. Mercari will get your money back the you can get a good pair from here.These things were about to squeeze my head in half they were so tight. Just look at the width difference between the red frames posted above and the white. You can tell the white pair hug the stand a lot more. The frame felt like air. There is no serial number, no M Frame inscription, and no made in USA inscription. Only thing that may be real are the lenses. I’m definitely no expert but I knew something wasn’t right with these.