2 Pairs Polarized Replacement Sunglasses Lenses for Oakley Flak Jacket with Excellent UV Protection (Emerald Green-Black) Made of premium quality, polarized and 100% UV protection; Precison Cut to fit with the original Oakley Flak Jacket frame extremely seamless; Optional mirror coatings design , optimize light for specific environment and activities; Reduces glare and Impact Resistant; Suitable for cycling, running, driving and other out-door sports and activities.