Stand out and stay protected in the Ray-Ban Hexagonal Collection Glass Sunglasses. They feature flat crystal lenses with a unique hexagonal shapea combination of a circle and a squareencircled in sturdy steel frames. Select styles feature Evolve photochromic lenses, which are sensitive to light exposure and can adapt to every kind of environment to perfectly shade your eyes. Other features include extremely thin temples and thin coined profiles. Ray-Ban Hexagonal Collection Glass Sunglasses keep you looking great as you face the world. Imported.Manufacturer style #: RB3548N. Flat crystal lenses Select styles feature light-adaptive Evolve photochromic lenses Lenses have a unique hexagonal shape Sturdy steel frames Thin coined profiles Extremely thin temples Rubberized, nonslip nose pads About Ray-Ban lenses Classic: Created in 1937, the classic lens was originally developed for military use. Classic lenses are available in many styles, including the popular G-15 and B-15 lens. These lenses offer a high degree of clarity, comfort and protection, blocking out a majority of blue light and prevents 85% visible light from passing through the lens. Mirror: The mirror coating features an advanced technological coating to help reduce glare and increase contrast for greater visual comfort, while also providing a stylish look. Flash Mirror: The same great technological coating as the mirror lens significantly decreases glare, with an additional bold and stylized flash coating. Gradient: Gradient lenses are characterized by a smooth transition from a solid color to a transparent shade of the same color. Photochromic: Sensitive to light exposure and adaptable to every kind of environment. The UV400 protection ensures almost complete protection for the eye. (99%-100%).