metal frame Composite lens polarized Lens width: 62 millimeters TAC POLARIZED LENS – These aviator sunglasses are using 10-layer polarized lenses with the double UV blocking coating and polarizing film that keep your eyes fully protected against harmful UV, UVA/UVB rays! Water, snow, fishing, while driving or at the beach, they will help you have good vision! HIGH QUALITY MATERIALS – These classic style shades is made of high quality metal material with gloss plating surface, they are not just durable enough for long time using, but provides elegant looking . It is suitable as high fashion accessory and daily wear all year round. FLEXIABLE SPRING HINGE – High quality metal spring hinge was used to adept to different face style, no pressure on your head, bring you most comfortable wearing experience.