1. Polarized lens. UV400 PROTECTION-Lenses block 99% or 100% of UVB & UVA Rays.UV 400 indicates an eye protection item that has been optimized to prevent eye exposure to both UVA and UVB radiation.
2.Polarized:Polarized Lenses Can Eliminate Glare And Reduce Eye Fatigue.Polarized Triacetate Lenses Are Scratch Resistant, Lightweight And Durable.