BVANQ Polarized Replacement Lenses for Oakley Flak 2.0 XL (OO9188) Sunglasses - 6 Options Available (Black Iridium Mirror) 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