The most popular style in Sunglass/Optical History is available in dark gray lenses using "Extreme Glare" Technology. The lenses are a dark gray, and have a blue mirror on the front surface to deflect the sun. The lenses have a durable scratch resistant coating to help guard against casual scratches.
The same design/style is sold by major optical companies for over $155. using ordinary sunglasses lenses. Our "XG" lenses are not "Polarized" and allow the wearer to easily read L.E.D., and L.C.D. digital screens on most outdoor electronic instruments without the blotches caused by polarization.