Fit matters more than shape. A frame in the theoretically perfect shape for your face will still look wrong if it is the wrong size, and a pair that fits properly is the pair you actually wear.
Four checks. Ten seconds each.
1. Width: the frame should match your face at its widest
Put the sunglasses on and look straight ahead in a mirror. The outer edges of the frame should sit roughly in line with the widest part of your face — usually the cheekbones or the temples.
Too narrow and the arms press inward, which is what causes the headache behind your ears after an hour. Too wide and the frame slides down every time you look at your phone.
This single check matters more than getting the shape theoretically right.
2. Where your eye sits in the lens
Your pupil should sit near the centre of the lens — horizontally and vertically. Not crowded into the inner corner, not pushed toward the top edge.
If your eye sits high in the lens, the frame is too small for your face. If it sits low, the frame is too large or the nose bridge is too wide. Either way the optics are off-centre and the frame will look subtly wrong in photographs even when you cannot say why.
3. The nose bridge does all the work
Almost all the weight of a pair of sunglasses sits on your nose. The arms only stop them falling backwards.
The bridge should rest without pinching and without leaving deep red marks after twenty minutes. If a frame slides down constantly, the bridge is too wide for you — not the arms being too loose, which is what most people try to fix.
Metal frames like Canazei and Selva usually have adjustable nose pads, which makes them far more forgiving across different nose shapes. Solid acetate bridges do not adjust, so they need to fit correctly out of the box.
4. The arms should touch, not grip
The arms should make light contact along the side of your head and curve gently behind the ear. They should not squeeze at the temples, and they should not be so loose that the frame shifts when you nod.
Shake your head gently. Slight movement is fine. Sliding down your nose is not.
What the numbers inside the arm mean
Most frames have three numbers printed inside one arm — something like 52□18 145.
- 52 — lens width in millimetres
- 18 — bridge width, the gap between the lenses
- 145 — arm length from hinge to tip
If you already own a pair that fits well, those three numbers are the most useful thing you can know when buying online. Anything within a few millimetres will fit similarly.
Shapes that are more forgiving
If you are unsure, some shapes tolerate a wider range of faces:
- Rimless frames — with no frame outline, there is less to sit wrong against your features
- Slim metal ovals — lightweight, usually with adjustable pads
Bolder shapes — oversized and geometric frames — are less forgiving, because a size mismatch is more visible on a larger frame.
If it is not right
Returns are accepted within 14 days on unworn frames in original condition, so trying a size you are unsure about costs only the trip back. Every GRIPZ frame is unisex, polarized and rated UV400 — the only real variable is which one sits right on you.
Once you have the size, the face shape guide covers which silhouette to pick.