The ASR Magnetic Performance Sunglass has magnets in each arm, allowing
it to be stored conveniently on metal surfaces when not being worn.
The frame is made of TR90 NZZ, which is lightweight flexible &
impact resistant. It meets all ANSI Z87.1 standards for safety. All
lens options are shatterproof polycarbonate and 100% UVA & UVB
protective. The photochromic clear to smoke super dark lens changes in
to a true dark smoke when exposed to UV light.
All ASR Magnet sunglasses come with a folding case and microfiber bag.
Photochromic lenses are optical lenses that darken on exposure to
specific types of light of sufficient intensity, most commonly
ultraviolet (UV) radiation. In the absence of activating light the
lenses return to their clear state. Photochromic lenses may be made of
glass, poly-carbonate, or another plastic. They are principally used in
eyeglasses that are dark in bright sunlight, but clear in low ambient
conditions. They darken significantly within about a minute of exposure
to bright light, and take somewhat longer to clear.