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
Geometry: spherical shape - Base 7
ANTI BUEE
Decathlon 's exclusive new permanent anti-fog treatment makes it almost impossible to fog your glasses!
This treatment does not deteriorate over time and works in all weathers and temperatures.
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.