Polarized Photochromic Sunglasses [Ultra-LightweightFast Color-ChangingAluminum-Magnesium Alloy] Unisex Photochromic Lenses, Sports Sunglasses, UV400

Photochromic sunglasses are glasses whose lenses change color depending on the intensity of UV rays. They react to UV rays and gradually tint the lenses when exposed to sunlight outdoors, then gradually lighten when indoors. The lenses contain a mixture of halogen and silver, which break down when exposed to UV rays, darkening the lens color. This chemical reaction results in photochromic sunglasses. Please note that the lens color change takes longer when exposed to weak UV rays. ☀[Polarized lenses] Polarized sunglasses provide clear vision. They effectively cut out light from road signs that are glaring or reflecting light, from the road surface that makes it difficult to see the white lines, from light reflecting from below while running that can tire your eyes, and from golf greens that make it difficult to see the contours of the green, providing gentle protection for your eyes. ☀[Ultra-lightweight & sleek design] The nose pad arms can be adjusted to fit the shape of your face and nose, and the stress-free fit is designed for Japanese people, ensuring a comfortable fit. The frame material is aluminum-magnesium alloy, making it ultra-lightweight. The nose pads and temple pads are made of soft silicone material, which makes them less likely to leave marks even when worn for long periods of time. They also prevent slipping even during intense movements, and are easy to put on and take off. They come with a dedicated case, making them convenient to store outdoors. ☀[Very useful] In addition to ordinary sunglasses, these have many functions and can be used in a wide range of applications, making them perfect for outdoor activities such as driving, golfing, fishing, running, cycling, mountain climbing, baseball, etc. ☀[Quality Assurance] UHUKO sunglasses come with a polarized card that can be used to test the polarized function, and a special light can also be used to test for discoloration. We are so confident in the quality of our products that we offer a reliable quality assurance system. If you have any problems with the product within 180 days of purchase, we will respond promptly to your request.