How the Photochromic Lenses Work
The lenses carry a photochromic layer that reacts to outdoor UV light: they stay fully clear indoors and darken to a comfortable grey tint within seconds in the sun. Back inside, they fade back to clear. Prescription strengths from -0.50 to -4.00 are built into every lens, so one pair covers both indoor vision and outdoor sun protection.
Key Features
- Photochromic lenses — clear indoors, grey tint outdoors, no lens swapping
- Myopia strengths -0.50 to -4.00 — 8 powers in 0.50 steps
- Half-rim metal frame — open lower rim keeps the view light and unobstructed
- Adjustable silicone nose pads — non-slip and comfortable for all-day wear
- Sturdy metal hinges — smooth opening and closing, built to last
- Unisex design — Black and Silver colourways for men and women
Frame Measurements
| Measurement | Size |
|---|---|
| Lens width | 54 mm |
| Lens height | 36 mm |
| Bridge width | 18 mm |
| Total frame width | 140 mm |
| Temple length | 142 mm |
With 54 mm wide rectangular lenses, this frame offers generous coverage and suits medium to larger face shapes.
Good to Know About Photochromic Lenses
- Darkening speed depends on UV intensity — brighter sunlight means a deeper tint
- Inside a car the tint may stay lighter, as windshields block most UV
- The tint works fully even in cold weather
Which Face Shapes Suit Rectangular Half-Rim Frames
- Round faces — angular lenses add definition and structure
- Square faces — the open half-rim softens a strong jawline
- Oval faces — rectangular frames keep natural balance
Care Tips
- Rinse lenses with lukewarm water before wiping to remove dust
- Use a microfibre cloth; avoid paper towels and clothing
- Store in the case to protect the exposed lower lens edge
Frequently Asked Questions
Are these prescription glasses?
Yes — the photochromic lenses come ready with myopia (nearsighted) strengths from -0.50 to -4.00. Select your strength from the options above.
Do they work as sunglasses?
They darken in sunlight like sunglasses, but the tint is lighter than dedicated sunglasses, making them ideal for daily commuting and driving transitions.
Will they darken inside a car?
Usually only lightly — car windshields block most of the UV that triggers the darkening.
Do they come with a case?
Yes, every pair ships with a protective case and cleaning cloth.
