SIZE GUIDE

Every Sito product page lists the frame size as three numbers, like 52 □ 20 □ 145. Check them against a pair you already own and you'll know how ours will fit.

Use a pair you already own

Grab sunglasses that fit you well and a ruler. Measure one lens across its widest point, then the gap between the lenses where they sit on your nose. Compare those two numbers with the first two numbers on any Sito product page. If they're within 2mm, the frame will sit the same way.

How wide is it

We measure the whole front, hinge to hinge, and put every frame into one of three widths.
Small: up to 141.5mm
Medium: 142 to 145.5mm
Large: 146mm and over
If most frames feel tight at your temples, look at Large. If they slide down or sit wider than your face, look at Small.

All measurements

A Lens width: across one lens at its widest point.
B Bridge: the gap between the lenses, where the frame sits on your nose.
C Lens height: top to bottom of one lens.
D Arm: from the hinge to the tip behind your ear.

Every product page lists these under Size & fit.

On your face

Width: the front should be about as wide as your face at the temples, no wider.
Cheeks: smile. The frame should sit clear of your cheeks.
Arms: they should rest on your ears without pressing behind them.
Still not sure? You have 30 days to return it.