Measuring for sunglasses is pretty simple..

Measuring for sunglasses is pretty simple and the easiest way is if you already have a pair of glasses. First see if they have three numbers on the inside of the glasses arm, it should be possible to use them as a reference when choosing; e.g. xx-xx-xxx Where the first number is lens width, the second is the bridge width, and the third is temple-arm length (all in millimetres)
If your glasses don’t have this information printed you can measure your reference size glasses with a ruler, and if you don't already have any glasses to measure then you can measure yourself directly, wikihow has an excellent guide - click here - all our eco sunglasses have the manufacturers measurements specified in the listing and are also fitted with flex hinges to fit faces of most sizes and compliment a variety of shapes