Glasses function highlights: Color varies with the strength of the ultraviolet light, polarized, anti-glare, waterproof, anti-ultraviolet,Eye protectionPhotochromic polarized glasses Polarized Photochromic lenses will change from light color to dark gray , Transmittance of visible light is from 45% to10% with the intensity of UV light. Effectively maintain the right brightness and protect your eyes in strong sunlight. Attention! The dark degree of the lens color depends on the UV intensity!UV400 protection These Bicycle sports glasses are made of high-end lenses and ultra-light memory TR 90 frames. Coated mirror lenses have UV400 protection to block harmful UVA and UVB rays, its safe, durable, impact resistant, and protect your eyes from sand, high winds and strong sunlight.Comfort These photochromic polarized glasses come with flexible mirror legs, suitable for different shapes of faces. Soft rubber nose support against skid. Built-in myopia frame design, convenient for you to install myopia glassesHigh-speed cycling Full frame design, bring better wind and dust proof effect. In addition, the curved design lenses of these mountain bike glasses have low air resistance and are suitable for high-speed cycling.Multifunction occasion HMLALR polarized photochromic glasses, perfect for cycling, motorcycle, mountain bicycle, driving, softball, baseball, basketball, tennis, golf, mountaineering, fishing, hiking, boating and other activities.