Our lenses are made from polycarbonate, a very durable shock-resistant material with one major inconvenience, it is sensitive to scratches.
Even if your lenses are scratched, the UV protection does not drop, the mirror effect is purely aesthetic.
The same as for the colour of our solar lenses.
Whether they are grey, brown or colourful... you can choose the sunglasses you prefer, you will be protected no matter what their colour.