Glasses structure: frame Lens color: silver frame black film, black frame black film, gray frame black film, brown frame brown film Whether polarized: yes Lens material: resin Anti-UV rating: UV400 Frame material: metal Style: Men's Visible light transmittance: 99.9 Sunglasses use instructions:                               On cloudy days, indoors, etc., when the light is dark, there is no need to wear sunglasses.                               Some people, regardless of the occasion, whether it is strong or weak, even wearing sunglasses at dusk, night, and watching movies and TV, will inevitably increase the burden of eye adjustment.                               For infants whose visual system is not fully developed, children should not wear sunglasses.          
