Frame sizes are usually in the format “50 - 20 – 140”. In this example this means that the lens diameter is 50mm the bridge distance is 20mm and the arm length is 140mm.

You can use this as a guideline by comparing them to your own glasses

HOWEVER, this is NOT the BEST way to obtain a good fitting frame. At spex4less I have added two further measurements that are FAR easier to understand and ensure a much better result.

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Lenses come in many flavours and again, at first, things can become a little confusing. But don’t worry. I am here to explain them all in detail so that you can understand and choose the best lens option for you.

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Tints

Tints can be used to make “Plastic” lenses in to sunglass lenses and are available in many colours. However, 1.67 and 1.74 lenses cannot be tinted as they already contain an antireflective coating to reduce “Power rings” which I will explain later.

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