Adult Photochromic Category 2 to 4 Sunglasses

What use is anti-UV material?To protect your eyes from an invisible danger... UV rays.UV radiation is always present, in winter or in summer, in sunny weather or even overcast and it can be harmful to your eyes and their contour.To help preserve your vision, our sunglasses lenses are made from polycarbonate blended with “anti-UV” material which protects you from harmful sun rays (UVA and UVB).

The colour of the so-called "photochromic" lenses varies according to the amount of UV rays.The activation time to change from the light tint to the dark tint (categories 2 to 4) is about 1 minute. The deactivation time to change from the dark tint to the light tint is about 3 minutes at room temperature (23°C).The lenses adapt directly to the amount of UV light emitted outdoors to provide better protection for the wearer according to the weather conditions.

Categorisation of tinted lenses according to the ISO 12312-1 standard:- Category 1: slightly tinted lens for reduced solar luminosity.- Category 2: medium tinted lens for medium solar luminosity.- Category 3: dark lens for heavy solar luminosity (sea and mountains). Between 82% and 92% of visible light absorbed- Category 4: very dark lens for exceptional solar luminosity (high altitude). Between 92% and 97% of visible light absorbed

Our lenses are made from polycarbonate, a shock resistant material however the big disadvantage is that it is prone to scratches.Even if your lenses are scratched, the UV protection is not reduced as the mirror effect is purely cosmetic.The same thing for the colour of our solar lenses.Whether grey, brown or coloured... you can choose the glasses you like, you will be protected whatever the colour.

We use Rilsan Clear G850 Rnew, a polymer derivative from castor oil, for the frame of these sunglasses.This biosourced material is a real asset in our developments so we can make a lightweight and flexible frame.

To reduce the environmental impact of our glasses, we can take action on material.We reduce the use of varnish and paint on these sunglasses frames, everything is directly integrated in the product mould.This is still not enough and that's why we are working to make these sunglasses 100% eco-designed one day.