Lenses Replacement Polarized Blue Mirror Coatings for Oakley Flak 2.0 XL Sunglasses It offers 100% UV protection & 100% polarized, easy to install Precison cut and guaranteed to fit with the original Oakley FLAK 2.0 XL frame extremely seamless Water, sweat, oil and dust resistant Reduces glare and enhances contrast perfectly Optional mirror coatings optimize usable light for specific enviroment and activities