"ATTCL United States Trademark Office registration number : 4875622 ATTCL - consistently provide the most high quality and fashionable sunglasses.we wanted to make shades that everyone would love,adheres leading Italy design concepts and coolest style,ATTCL obsessed with using design and innovation to create the products people truly like. Brand: ATTCL Lens: 100% UV400 Protection Lens,Blocks 100% Harmful UVA,UVB & UVC Rays Frame Material: Aluminum-magnesium Clour: As the picture Size:Lens Height --50MM(1.96 Inches)Lens Width:60MM(2.28 Inches)Temple Length--145MM(5.70 Inches)Nose Bridge:13MM(0.51 Inches)Frame Length: 145MM(5.7Inches) Package: Sunglasses *1, Case *1, Polarized test card*1 Service: We provide 30 Day refund and lifetime Warranty on Frame & Lens. If you have any problems in the future, Please contact us, We will provide you the best service! ATTCL Men's Driving Polarized Sunglasses Al-Mg Metal Frame Ultra Light, High quality solid color lenses, providing great clarity of vision, comfort and protection.User for Daily life, Party, Driving Sunglasses and all Active Outdoor lifestyles! How Do Polarized Lenses Work? Light reflected from surfaces such as a flat road or smooth water generally is horizontally polarized. This means that, instead of light being scSPered in all directions in more usual ways, reflected light generally travels in a more horizontally oriented direction. This creates an annoying and sometimes dangerous intensity of light that we experience as glare. Polarized sunglasses reduce glare reflected off of roads, bodies of water, snow, and other horizontal surfaces. Polarized sunglasses cut glare and haze so your eyes are more comfortable and you can see better."