PRODUCT âź ś[HIGH-STRENGTH LIGHTWEIGHT MATERIALS] Weve made sure to pour the highest grade of every feature into our VEITHDIA Polarized Sunglasses. Our lens are Polarized UV 400, Scratch resistant and Water proof as well. The frame of our sunglasses are made with PC material Using PC material in general creates a super Durable, Flexible, and lightweight frame. ś[UV400 POLARIZED PROTECTIVE LENS] These sunglasses are superior to the previous type of sunglasses in three ways when moving indoors or outdoors. And secondly, the polarized lenses reduce flare and glare. Meanwhile, UV protection layers against harmful UVA/UVB Rays ś[NO MATTER DAY OR NIGHT, IT WORKS WELL] Our sunglasses are made of special photochromic polarized lenses. When driving at night or into a dark environment, the lenses are lightcolored transparent to enhancing the visibility while effectively reducing the glare. During the daytime, it can effectively filter the strong light, enhance the visual sharpness, reduce eyes fatigue, and keep the eyes always in the most comfortable state of outdoor activities.˘ Polarized Grade-A Lens Scratch Resistant Lenses Shatterproof Lenses Hydrophobic Lenses Polarized Grade-A Lens Anti-Reflective Coating 100% UV Protection Details Displayâź Discoloration Test Methodsâź