Stand out and stay protected in Ray-Ban Hexagonal Collection RB3548 Gradient Glass Sunglasses. They feature flat crystal (glass) lenses with a unique hexagonal shape a combination of a circle and a hexagon encircled in sturdy steel frames with extremely thin temples and rubberized, nonslip nose pads. The gradient lenses in these Ray-Ban sunglasses are characterized by a smooth transition from a solid color to a transparent shade of the same color. Ray-Ban RB3548 gradient sunglasses keep you looking great as you face the world. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Non-Polarized.