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To find the best fit for your glasses, first you should look for the perfect frame width.

A frame that’s slightly wider than your face is a good place to start — no more than a finger width between the temple and your face is a good rule of thumb. If you’ve already got a pair of glasses that fit, measure from screw to screw on the face front for a good idea of the frame width.

You’ll also sometimes see other measurements on the temple (arm) of your glasses. These three numbers represent different parts of the frame: All frame measurements can be found in the details section of our product pages. For more help with finding your perfect pair of glasses, check out our full Size Guide.