The measurements on the inside of the frame represent the lens width (43 mm), bridge width (22 mm), and temple length (145 mm). If you have a favorite pair of glasses, you can look at this measurement to figure out which of our pairs will fit you the best.
Lens width43 mm
The width of one single lens.
Bridge width22 mm
The measurement between the lenses.
Temple length145 mm
The measurement from the front of the frame to the back of the arms.
It's really good glasses over all, but could be better. It will be really nice if it comes with something that could clean the glasses since it gets fingerprints easily due when its folded, it's really compact. And also it's really fragile.