When browsing our wide range of sunglasses, you probably noticed that some of these items come in different sizes. Sunglasses tend to be larger than eyeglasses. With sunglasses, you have more freedom to choose within a wider range of sizes, since the fit does not need to be as precise. Every pair of glasses is a little different, so the size information may not always be located in the same place. Look on the inside of your current frames. You will find the size information stamped either on the temple or on the bridge.
For example, if the numbers are 54-20-135 (C-D-E), your frame dimensions are:
54 mm lens width
20 mm bridge width
135 mm temple arm length
Frame Dimensions include:
A：The Frame Width - Measure horizontally across the entire front of the frame. Include any lug or hinge pieces that stick out on the sides.
B：The Lens Height - Measure the lens vertically, at its tallest point. It is usually around 32-38 mm.
C: The Lens Width (Eye Size) - Measure the lens horizontally, at its widest point. Usually, the eye size ranges from 40 mm to 65 mm.
D：The Bridge - Measure horizontally, at the top of the bridge, from the edge of one lens to the other. It typically ranges from 14 mm to 24 mm.
E：The Temple (Arms) Length - Measure from the hinge where the arm connects in the front, to the spot where the arm begins to bend down around the ear. Then measure from the top of the bend to the bottom tip. Add the two sections together for the total temple arm length. It usually falls between one of three standards - 135, 140 or 145 mm.