Precision Fit: Please pick Regular for RW4006 50mm frame, Standard for Wayfarer (Gen 2) RW4012 50mm, Large for RW4008/ RW4012 53mm. Seamless edge alignment ensures a secure fit without the need for tools Polarized Performance: Polar technology intercepts reflections and reduces glare for better contrast and improved clarity View Tint: Optically optimized tints tailored for specific activities. Designed to enhance performance in fishing, golf, driving, and other outdoor pursuits Full Protection: With 100% UVA and UVB protection, harden-coated for Anti-scratch and abrasion resistant Premium After-Sales Service: Your Unwavering Shield Against Every Concern!