TR Frames Triacetate Cellulose Lenses Polarized UV Protection Coating Lens Width: 62mm TAC Polarized Lenses - Lenses are made of Triacetate Cellulose (TAC) material. TAC has excellent optical properties to prevent shrinkage of PVA polarizing film, high strength surface with scratch resistance. Restore true colors, eliminate reflected light, and perfectly protect eyes. HIGH QUALITY FRAME These sunglasses are made ofhigh quality TR90, UV400 protective lenses, reinforced metal hinges, all the details to ensure you use it for a long time. Stylish and Unique Design They are perfect for outdoor activities such as driving, shopping, traveling, etc. Gift Creative Packaging Sunglasses*1, Microfiber Glasses Cleaning Cloth*1, Glasses Case*1. It's also gift-wrapped, making it a wonderful and practical gift for friends and family LIFETIME WARRANTY - We offer a hassle-free lifetime warranty and friendlycustomer service. How do polarized lenses work? Polarized lenses have a special coating that blocks horizontally polarized light. They protect your eyes from annoying glare while letting unpolarized light through. This provides better vision compared to standard tinted sunglasses. What are the advantages of polarized lenses? If you want to view objects located on the ground in bright conditions, polarized lenses allow you to see with better color contrast becausehorizontal light waves are filtered out. The enhancement of color perception can provide better visual clarity than the overexposure your eyes would deal with if you didn't wear lenses in the first place. Since your eyes don't make an effort to recognize specific objects in the environment,you can avoid fatigue-related problems, such as headaches, more often with this product. Polarized sunglasses protect your eyes by blocking glare reflected off water surfaces. Polarized lenses block glare from slippery roads while driving. Make sure you can read the dashboard display through the lenses Polarized lenses are great for hikingtrips, taking you to exposed places like mountain tops, especially in snowy conditions.