About UV400: UV400 refers to the reaction with ultraviolet radiation. UV rays are sunlight with a wavelength of 200 nm to 380 nm. This mainly damages the cornea of the eye, the lines and other tissue. It causes corneal inflammation and corneal endothelial cell damage and the most common eye diseases. Why you should opt for clip-on sunglasses: 1.This glasses with clip can be easily covered with normal glasses and saves a lot of money! 2. Reduce glare, avoid harmful light, improve visual clarity, increase contrast, and give a more natural view. 3. Provides maximum protection against harmful UV rays, protects your eyes from long-term UV damage and keeps your eyes healthy. when you go out there 4.Polarized glasses are usually more flexible and are suitable for wearing in different conditions while leisure activities are running. TIPS To prevent surface damage Never use alcohol or other chemicals to clean the lens. Return Policy: Customers receive damaged, defective products. Please take pictures first, save pictures, please contact us. The colors may vary depending on the monitor. You can see the differences between the computers and the printed colors. If you are not satisfied, please contact us first by e-mail. We solve the problem for you. I wish you a good shopping experience here. Many thanks!
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