Siler Aviator Men Sunglasses (M172BR2)

It protect from wind, blowing dust, sand, and other airborne debris that could irritate your eyes and even scratch the cornea, which could cause permanent damage. Sunglass lenses are made from a variety plastics and glass. Plastic lenses, such as acrylic and polycarbonate, are light and impact resistant and most are naturally UVR-absorbing. Glass lenses can have excellent optical quality and are more scratch resistant.