Fashion frame makes fashion style more obvious, HD lenses restore true color.This glasses’s color isvery distinctive and very beautiful. In the dark season, you need beautiful colors, visual impact, whether you are in the city or going out on vacation, are destined to be bright.The lenses of reflective sunglasses can be reflected like a mirror. The lens is coated with a very thin reflective coating - it is called a semi-silvered surface because it is very sparse. The term "semi-silvered" derives from the fact that the reflective molecules on the lens are very sparse, and the number is approximately half the number of molecules that make the lens an opaque mirror. At the molecular level, the reflective molecules are evenly dispersed on the surface of the lens to form a uniform film, but only half of the area of the lens is covered by the film. This half of the silvered surface reflects about half of the light that reaches its surface, while the other half passes it directly. Sunglasses worn by motorists are often placed on the dashboard or on the seat when they are not worn. This is a very bad habit, hot weather .