I’m not sure why everybody complains that these are not KD’s. First of all, these are narrower. That is the point of motorcycle glasses, so that they can fit inside a helmet under the visor. Secondly, these have spring loaded hinges to stop the pressure on the screw, which is a long known problem with KD’s. No, these are not designer glasses. They are cheap and they are meant to be cheap because on a motorcycle you tend to break a lot of glasses. I am not saying these are perfect by any means. However, for helmet shades, they are just about right.