The Oakley Flak Jacket XLJ sunglasses are a weapon accessory that will protect you in bright light conditions that can interfere with your performance at your highest potential. This Flak Jacket XLJ is engineered with grey polarised technology that will maximise your vision and crisp sharpness. The lenses in the XLJ design are longer and have a wave-like cut along the bottom, which will provide more coverage than standard lenses.