Oakley flak 2.0 xl steel prizm black sunglassesthe same sized frame as the original flak frame with enhanced lens coverage, the oakley flak 2.0 xl steel prizm black sunglasses are engineered to optimise your vision.the large lenses are enhanced with 8.75 lens geometry and oakleys unique hdotrade technologies. The lenses also come with prizmtrade lens technology which boosts colour and contrast to allow you to see in incredible detail.meanwhile, the frame is constructed from o mattertrade which is incredibly lightweight, flexible and durable. Stabilising the fit, unobtainiumtrade earsocks and nosepads increase comfort and increase grip against sweat and rain.lens specificationslight transmission 11%light conditions bright lightcontrast increasedbase lens colour greyfeatureslightweight o mattertrade frame material with ellipse metal icon accentsunobtainiumtrade earsocks and nosepads for increased comfort and performance8.75 base lens geometry with high definition optics hdotradeprizmtrade lens technology enhances colour, contrast and detail for an optimised experiencecomes with a protective soft vaultbuy oakley sport sunglasses from chain reaction cycles, the words largest online bike store.