... 4,Lens with anti-fog,anti-scratch treatment5,Designer sunglass for your brand Product Namesunglasses,driver glasses, driver safety glasses, polarized ... . Withstand long-term exposure to direct sunlight, will be also led to a rapid decline in vision, formation of nearsightedness ... be changeable according to the light’s strong and weak. It can be changed the lens’ transmittance within 2seconds. With ...