Buying sunglasses online can be daunting. Of course, this pair of models looks good on the model, but how do they look? Does it fit your proportions and face shape? No one can fit your frames professionally. How can you ensure that you find the right frames?

Fortunately, if the first pair of glasses you buy is too large or too small, most companies will provide services to replace the glasses. But I prefer to shop smarter and do it the first time. If you want to avoid trouble and waiting for the replacement process, it is important to understand the meaning of glasses measurement and your own measurement so that you can buy the perfect frame with confidence.

Let us dive into the details of frame measurement and eyewear assembly so that you have all the tools you need to buy like an expert.

How to wear glasses?
First of all, how should your glasses fit you? If you are looking for sunglasses, you may have never installed frames professionally, but the correct installation of sunglasses frames is as important as the frames with prescription glasses. This is related to the comfort, wear resistance and service life of sunglasses.

You should be able to place your fingers between the arm and temple of the frame, and the pupil of the student should be just above the center of the lens. Your frame should not be loose or taut, the bridge should be placed high and fixed to your nose without re-adjusting or pinching, and your arms should be straight back to your ears without bending your head or Fold inward. In other words, they should be comfortable.

Some sunglasses are made of stainless steel nose pads for easy adjustment, but many acetate frames are not flexible and need to be properly installed on your glasses frame. So, how do you determine how the framework will suit you without trying? It helps to understand how to interpret the frame size.

Frame size
The frame measurement considers five parameters:

Frame width-the total width of the frame, measured across the widest part.
Nose bridge width-the distance between the two lenses placed on the bridge of the nose.
Arm length-"arm" or "temple" is the part that extends back to hook behind the ear. Arm length refers to the length from the hinge through the elbow to the end of the arm.
Lens width-the distance of a single lens at its widest point
Lens height-the distance from the top of the lens to the bottom edge of the longest edge (including the frame).