spy sunglasses

maggie · Guest

I can't figure out how a pair of spy optic sunglasses measure. The gives the specs as follows: 57-19-121 but I'm not sure what these measurements refer to, can you help?
Thanks,
Maggie

Peter_J · Joined: 10 Aug 2007 Posts: 157

You will definitely be glad to know what those numbers mean. I always look for them whether I buy online or in a store. (In a store, look for the numbers on the inside of the frame.)

All of the numbers refer to measurements in millimeters.

The first number is the width of a lens. The second is the distance between lenses (width of the nose bridge). And the third is the length of a temple (one of the arms).

A rule of thumb is that sunglasses should be as wide as your face. You can measure your face by holding pencils on each side at eye level and bow down on a piece of paper. To know the width of the glasses, multiply the lens width by two (one for each lens) and then add the distance between lens. Then add around six millimeters extra for the amount the arms stick out on the sides.

The measurements for sunglasses that wrap can be confusing. The width of the lenses is larger and the temples don't have to be as long.

The temple measurement is confusing. The measurement is as if the temple is bent straight out.

It is good if you go to a glasses store and try on a lot of glasses and notice the size of each. It won't take you long to find out which size fits you best.

Which Spy Sunglasses do you like? If you like California Cool, you might want to see the Arnette Sunglasses!