★ 100% UV400 PROTECTION LENS, Blocks 100% Harmful UVA,UVB & UVC Rays.Research has proven that wearing sunglasses that block ultraviolet rays can prevent many eye ailments.
★ POLARIZED PHOTOCHROMIC LENS, Photochromic Lens change color based on light conditions, letting more light in during dark,low-light conditions and blocking more light when it's bright and sunny. Polarized photochromic lenses will help against glare from water, snow and ice.