Cofery Replacement Lenses for Oakley Flak 2.0 XL Sunglasses - Multiple Options Available 100% Polarized (For Polarized Lenses Only, Reduces Glare and Enhances Contrast) 100% UV Protection (Exceeds ANSI Z80.3 and EN 1836:2005 Standards) 16% Light Transmission, 12%-40% (For Photochromic Lenses), 99% (For Clear Lenses), 75% (For Yellow Lenses) Impact Resistant - Passed FDA Drop Ball Test (For Most of Our Polarized Lenses and Non-Polarized Lenses) Cofery Repel Coating (Repels Dust and Water)