Photochromic lenses: Lenses are clear when indoors or at night and automatically darken to a sunglasses tint when exposed to UV sunlight.it adapts to changes in light, different degrees of ultraviolet light, the lens will become different degrees of darkness.
STYLE-New Brand Design. It is Suitable For Any Face, Show Your Unique And High-end Taste.
Polarized sunglasses have a filter that works to prev lightweight polycarbonate frame you will forget you are wearing them In the middle of an adventure you cannot let heavy sunglasses weigh you down.