Most online glasses stores provide detailed eyeglasses frame measurements of all their frames, and to ensure the frame will fit you well, the most important measurement is the totol width of the frame.

You may still ask, "How big is a frame really?" You could always have a general ideal through either of the following methods.

1. If you have an existing eyeglass frame that fits you well, you can use a ruler get its measurements and compare with our measurements.

2. If you do not have an existing eyeglass frame, you can look in the mirror with an ordinary ruler resting on the top of your nose and measure the total width of your face. The total frame width should not be more than a few millimeters wider than your face.