Metal frame Plastic lens Polarized Scratch Resistant Coating Coating Lens width: 45 millimeters 100% POLARIZED LENSES These classic vintage circle sunglasses are polarized and provide 100% polarization efficiency while blocking and managing UV and HEV light, providing a superior visual experience and glare protection. Polarized sunglasses eliminate glare and haze so your eyes are more comfortable and you can see better. Polarized lenses contain a special filter that blocks this type of intense reflected light, reducing glare. PREMIUM MATERIAL POLYCARBONATE LENSES Polycarbonate is a durable material. Although it has high impact resistance, it has low scratch resistance, which is why a hard coating is applied to polycarbonate sunglass and eyeglass lenses. Polycarbonate is highly transparent to visible light, with better light transmission than many other types of lenses. COMFORTABLE FIT Reinforced metal spring hinges offer adjustable arms to fit different head sizes and face shapes. The sunglasses can sit securely during outdoor activities. Perfect for driving, running, racing, boating, fishing, skiing and climbing, hiking, outdoor walking or other activity enthusiasts. PREMIUM PACKAGE Comes with premium microfiber pouch, microfiber cleaning cloth, user manual and tag. We believe buying glasses should be easy and fun. It should make you happy and stylish, with money in your pocket.