2 Pairs Polarized Lenses Replacement Black & Black Mirror for Oakley Twenty XX (2012) Sunglasses 2 Pairs of lenses replacements - black & black mirror coatings Precison cut and guaranteed to fit with the original Oakley Twenty XX (2012) 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