GLASS
Photochromic glass category 1 to 3: filter varying from 15% to 55% of light at 23C°.
In cold weather (below 10C°), tint variation is greatly slowed.
ISO standard 12312-1.
100% ANTI-UV filter.
PHOTOCHROMIC TECHNOLOGY
Photochromic lenses adapt automatically to light conditions.
The lens is tinted in around 30 seconds (45 seconds to deactivate).
The perceived brightness varies little, even if the outside light changes.
For example, when cycling, the change in tint is hardly noticeable.
The tint changes smoothly, as the eye adapts at the same time.
A cold temperature will activate (tint) the lens more quickly.
MOUNT
Frame material: polyamide.
Nose pad material: rubber.
Temple material: polyamide + rubber.
Temple tip material: rubber.
Size: suitable for all types of face (from thin to large).
CARE INSTRUCTIONS
For effective cleaning of treated glass, rinse with water, with or without liquid soap, and rub gently with your fingers.
Allow to air dry, then iron with a soft, dry (optical) cloth to remove any remaining traces.