Ray-Ban RB4165 Square Non-Polarized Sunglasses, Brown Gradient. Trasp, 55mm Resin/Plastic Frame. Imported Plastic frame Plastic lens Non-Polarized 100% UV protection coating Plastic sunglasses featuring square prescription-ready lenses with "RB" etched on left lens The shape and curvature of these sunglasses may need adjustments. Adjustments should only be made by a professional. Includes protective case Lens width: 54 millimeters; Bridge: 16 millimeters; Arm: 145 millimeters