Frame Size
Getting the right frame size is the single biggest factor in how comfortable your glasses feel. Frames that are too wide slip down your nose; frames that are too narrow pinch and leave pressure marks. This guide explains what the numbers on your frames mean, how to measure your face, and how Shade Gray's four size labels map to those measurements.
The quickest way is to read the measurements stamped on the inside of a temple arm - the arm that goes over your ear. You will see three numbers like this:
These three numbers appear on virtually every pair of glasses and always follow the same order.
Horizontal width of a single lens. This number most directly determines whether a frame looks narrow or wide on your face.
44 - 58 mm typicalThe gap between the two lenses over your nose. A wider bridge gives more breathing room; narrower keeps frames centered.
14 - 24 mm typicalFull arm length from hinge to tip. Longer temples suit larger heads; shorter ones work better for petite faces.
130 - 150 mm typical
The three measurements stamped on the inside of any temple arm, always in millimeters.
No glasses on hand? Grab a soft measuring tape and a mirror. Face width is the most reliable way to find your size.
Good lighting helps. Relax your face into a neutral expression and look straight ahead.
Hold the tape horizontally across your face at the widest point - usually just above the eyebrows. Keep it level and do not press it into your skin.
Most adult faces fall between 120 mm and 160 mm. Match your number to the size chart below.
Rounder, taller faces suit deeper lens shapes. Longer faces often look great with bold, oversized frames.
Every product listing shows a size label so you can filter before you even click a frame.
| Size | Face Width | Total Frame Width | Lens Width | Best For |
|---|---|---|---|---|
| Narrow | Up to 130 mm | Up to 127 mm | 44 - 48 mm | Petite and slim faces |
| Medium | 131 - 137 mm | 128 - 137 mm | 49 - 51 mm | Average adult face, most common fit |
| Wide | 138 - 145 mm | 138 - 145 mm | 52 - 54 mm | Broader faces, larger adults |
| Extrawide | 146 mm and up | 146 mm and up | 55 - 58 mm | Wide faces most brands do not carry |
When between sizes, size up. A slightly larger frame is easier to adjust than one that pinches.
Face shape guides style choices more than size, but knowing yours helps you pick frames that balance your features.
Angular or rectangular frames add definition. Medium or Wide in a rectangular shape works especially well.
The most versatile shape - almost any frame works. Use your measurements to find size, then pick the style you love.
Rounded or oval frames soften strong jawlines. Avoid boxy shapes. Medium or Wide round frames are ideal.
Wider at the forehead, narrower at the chin. Bottom-heavy or rimless styles balance the proportions. Medium usually fits best.
Taller lenses and wider frames shorten the appearance of a long face. Wide or Extrawide with extra lens height work great.
Use our Home Try-On to test different shapes at home for free. Pick up to 4 frames and keep what you love.
- Go to All Eyeglasses.
- Use the Size filter to select Narrow, Medium, Wide, or Extrawide.
- Click any frame and check the product details to confirm the exact mm measurements.
- Still unsure? Add frames to Home Try-On and test them at home for free before buying.
