FSK Sunglasses for Men Polarized Sports UV400 Metal Men's Fashion Retro Wayfarer Driving Sunglasses (Silver frame Gray lens) TAC POLARIZED LENS: 100% UV400 protection coating, blocks 100% harmful UVA & UVB Rays and protect eyes perfectly. TAC lens includes 5 layers. The 1st layer is polaroid layer. FLEXIBLE AND DURABLE: Our polarized driving sunglasses not only have the fashionable Driving style but also have the Humanized Design. Elasticity frame and Silicone nose pad give you different wearing feelings. HIGH VISION LENS PROTECTION: The polarized sunglasses help you have a high clarity vision in front of you to see clearly and more comfortably. LIGHTWEIGHT MATERIAL: Lightweight AL-MG alloy design is ideal for usage by motorcycle and cycling bicycle, driving, running, fishing, racing, skiing and climbing, trekking or other outdoor activities enthusiasts. LIFETIME GUARANTEE ON AMAZON. 30-Day Money Back Guarantee. 24-hour customer services before purchase and after sales. Lifetime Breakage Warranty on Frame & Lens.