Thanks for asking about these glasses. With the naked eye, the only issue I see, and I missed at first, is that B & L tinted glasses have a chip in the frame. It should be visible in the photos, it is on the bottom of the top corner. With my jewelers loop, I see the following: One pair of the AO flex fits has some tiny solder splatters on them. and I see one that is a little pit. Again on the B&L tinted green, same splatters and several pits. I didn't even notice these when I put the glasses on. I am not sure if the splatters will come off. I don't know how to properly clean and therefore do not want to cause any damage trying to fix