A second prescription pair costs hundreds — and expires when your eyes do

This is the number that makes people angry, and fairly so. In the US, prescription sunglasses commonly land at $300 or more. In the UK they typically run £100–£245. In Australia, multifocal prescription sunglasses regularly pass $500.

And they are disposable by design. New prescription, new lenses, new bill. You are not buying sunglasses — you are renting them until your eyesight changes.

SunFit sidesteps the entire cycle. Because they go over your existing glasses, they never go out of date. Your eyes change, your glasses change, SunFit still works.

Your Transitions don’t darken in the car

Photochromic lenses — Transitions and the rest — need ultraviolet light to activate. Modern car windscreens block most UV. Which means at the exact moment you need them most, driving into low sun on the way home, they sit there stubbornly clear.

It is the single most common complaint we hear from people who took the photochromic route, and it is not a defect. It is how the technology works.

SunFit is polarised from the first second. No activation, no ten-second wait, no lens playing catch-up with the sky. They go on, the glare goes away.

You stop playing the two-glasses shuffle

This is the part people underestimate until it stops. Prescription sunglasses do not remove a problem — they add a second pair to manage. In the bag. On your head. Left on the café table. Swapped at every single door.

SunFit slides on over what you are already wearing, and lifts off in about a second. Nothing to swap. Nothing to leave behind. Nothing to find again.

“But will they actually fit over my glasses?”

It is the first thing almost everyone wants to know, so here are the real measurements instead of a promise. SunFit comes in five frame shapes, including an XL for larger and deeper frames.

How to check in ten seconds: measure your own glasses across the front at the widest point, and top to bottom at the lens. If your frames sit under roughly 15 cm / 5.9 in wide, Classic, Cross or Luna will clear them. Deeper or wider frames — take the XL. Slim modern frames — Classic Slim.

And if you still get it wrong, you have 30 days to send them back.

They no longer look like “cataract surgery” glasses

The category earned its reputation fairly. For twenty years, fit-overs meant a bulky wraparound in one shade of grey, sold in a pharmacy aisle next to the reading glasses. That is the picture in your head. It is a reasonable picture. It is also about a decade out of date.

SunFit frames are cut low-profile and close to the glasses underneath — 24 styles for women, 12 for men, in tortoise, burgundy, transparent, matte black and mirrored finishes. They read as sunglasses, because that is what they look like.

Properly polarised and UV400 — not just a dark tint

A cheap tint only makes the world dimmer. It does not cancel glare, and a dark lens without a UV filter is arguably worse than none at all: your pupils open wider behind it and let more ultraviolet in.

SunFit uses polarised lenses that cut the horizontal glare bouncing off tarmac, water, snow and the boot of the car in front, with full UV400 protection. If you live somewhere the sun is not a polite suggestion — Queensland, Arizona, a Scottish winter road at four in the afternoon — this is the difference between squinting and seeing.

Light enough that they actually stay put

Weight is the quiet killer in this category. Stack a heavy frame on top of another frame and it slides down your nose the first time it gets warm — which is exactly when you are wearing it. That is how most fit-overs end up in a drawer.

SunFit is built to sit light on the bridge and stay there: through gardening, the school run, a walk along the water, an afternoon on the deck in real heat.

The four options, honestly compared

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