metal frame photochromatic lens polarized Lens width: 45 millimeters Metal frame Polarized lens Lens width:45mm Len height:45mm UV400 PROTECTION:Polycarbonate round lens 100% Blocks Harmful UVA,UVB & UVC Rays,Is indispensable when you go out or travel HIGHT-QUALITY MATERIALS: mirror legs and borders are made of high-quality metal material, the lens for the polycarbonate, round Lennon style for the classic and the perfect combination of fashion