Ray-Ban Oval Flat Lens Sunglasses (RB3547) Metal Plastic Imported Metal frame Plastic lens Non-polarized Iridium 100% coating Lens width: 48 millimeters Lens height: 48 millimeters Bridge: 21 millimeters Arm: 145 millimeters 2" high Case included Lenses are prescription ready (rx-able) These oval sunglasses combine a newly introduced retro shape: flat lenses on oval. The rb3547n flat shades come in both classic colors as well as bold flash lenses, all paired with golden frames.