The sun emits visible and invisible electromagnetic waves. The most harmful are UV rays which remain dangerous even in overcast conditions because clouds absorb at most 10% of it.
Flexible and comfortable arms, with spring hinges, which adapt to all face shapes and sizes.
UV rays damage the eye cells. With time, the renewal will be done less and less well. The SUN glasses provide adapted protection with 100% UV category 3 lenses which protect from glare and filter 100% of ultraviolet (UV) rays.