Got these long ago from a seller on eBay. These were custom made by Oakley Rx, although there is no perscription in them. Just to be clear - these are not some "Frankenstein jobs" like you see on eBay. The lenses were not cut or installed by some company other than Oakley - everything is 100% Oakley, from start to finish with these glasses (you may be able to see the elipse in the bottom corner of the left lens in the photo which verifies this).