Three numbers are usually displayed on the inside temple of the glasses i.e. 47-21-145 (always in millimetres). We have a diagram to demonstrate what each number represent. Two frames with identical numbers can differ in fitting according to frame style.
- First number (lens width) can range from 40mm-62mm
- Second number (bridge size) can range from 14mm-24mm
- Third number (temple length) can range from 120mm-150mm
Sunglasses numbers tend to be higher than your regular everyday glasses due they tend to be larger to give you more coverage and protection from the sun.