UV Activated Transitioning Lenses ClearEyz Photochromic Sunglasses adjust to different light conditions to provide improved visibility and help to reduce eye strain. The light-adaptive lenses transition from light to dark and back again based on changes in brightness. These stylish sunglasses shield the sun’s harmful rays, providing 100% UVA/UVB protection. Provides the perfect amount of tint at all times. Features Self-tinting and UV activated Protects eyes from harmful UV rays Provides improved visibility and reduces fatigue Anti-scratch coating One size fits most Black only Includes 1 X Photochromic Sunglasses, 1 X Zippered Case, 1 X Photochromic Test Card, 1 X Cleaning Cloth