Size & Fit Guide
Buying frames online only feels risky until you know the numbers. Every frame we sell lists three measurements — once you know what they mean, you'll pick the right size every time.
The three numbers
On every product page you'll see something like 56 □ 18 — 140. That's:
| Number | What it is | Typical range |
|---|---|---|
| Lens width | Width of one lens, side to side (mm) | 46–58 |
| Bridge | The gap between the two lenses, over your nose (mm) | 14–24 |
| Temple | Length of the arm, from hinge to behind your ear (mm) | 135–150 |
The easiest trick: read a pair you already own
Grab your current glasses and look on the inside of the temple arm. You'll usually find those same three numbers printed there (e.g. 52 18 145). Match a new frame's numbers within a couple of millimetres and it'll fit much like your old pair.
No numbers printed? Lay the glasses flat and measure one lens across at its widest — that's the number that matters most.
No reference pair? Measure your face
Measure the width of your face across the temples (just above the ears) in millimetres, then compare:
- Narrow (under ~130mm): look for total frame width on the smaller side.
- Medium (~130–140mm): most standard frames fit.
- Wide (over ~140mm): favour larger lens widths and longer temples.
A well-fitting frame sits level, doesn't pinch your nose or temples, and the outer edges line up roughly with the sides of your face — not spilling past them.
Shape by face shape (a loose guide, not a rule)
| Face shape | Tends to suit |
|---|---|
| Round | Rectangle, square, geometric — angles add definition |
| Square | Round, oval, browline — curves soften strong angles |
| Oval | Most shapes; you got lucky |
| Heart | Round, cat-eye, rimless — balance a wider forehead |
| Long | Oversized, deep frames — add width |
Rules are made to be broken. The best frame is the one you like on your face — which is exactly what virtual try-on is for.
Measuring your pupillary distance (PD)
PD is the distance between your pupils in millimetres, and it's needed to centre your lenses correctly. To measure it:
- Stand about arm's length from a mirror.
- Hold a millimetre ruler across your brow.
- Line up the zero with the centre of your left pupil, and read the number over the centre of your right pupil.
- Do it twice; most adults land between 58 and 68mm.
Your optician can also provide it — it's often on your prescription. More on lenses in our lens guide.
Try before you commit
Numbers get you close; try-on gets you certain. On any product page, put the frame on your actual face with virtual try-on, or spin it in full 3D to judge the proportions. And if it's not right when it arrives — frames are money-back for 30 days.