YAYGOD Photochromic Polarized Sunglasses Unisex Sports Sunglasses with UV UV400 Perfect for Outdoor and Driving Designed TR90 with Photochromic Lenses

Photochromic lenses: These are lenses that change color from "light to dark" outdoors and "dark to light" indoors. Silver halide is mixed into the lens material, and when exposed to ultraviolet light, the silver halide breaks down into atoms, causing the color to appear. When the ultraviolet light weakens, the silver halide combines again, becoming molecules and losing its color. Photochromic lenses are created by taking advantage of this chemical change. Provides clear vision: Can be used in combination with sunglasses, can detect UV rays, has high visible light transmittance, and in strong sunlight outdoors, the lens color darkens, effectively cutting glare and reducing eye fatigue. It also has a polarized function, cutting scattered reflections and reducing glare from glass surfaces and water surfaces, ensuring a clear view. Stylish Design TR frames feature a modern, sophisticated design that complements a variety of fashion styles. From simple monochromatic designs to unique color combinations and patterns, a wide range of options are available, allowing you to express your individuality. The design also enhances the contours of your face, enhancing the appearance of your facial lines, making them suitable for a variety of face shapes. Lightweight and comfortable frame TR material has low density and is extremely lightweight. This reduces strain on the nose and ears, reducing fatigue even when worn for long periods of time, providing a comfortable fit. Excellent durability and strength: TR material has high elasticity and impact resistance, making it difficult to break even in unexpected collisions or drops, and can withstand long-term use. - It also has excellent abrasion resistance, resistant to the scrapes and wear that come with daily use, allowing the mount to maintain its appearance and functionality over time. Quality Guarantee: If you have any problems with the product within 180 days, we will provide an unconditional refund or exchange at any time. polarization