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.


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