Oakley flight jacket prizm trail sunglassesoakleys flight jacket prizm trail sunglasses are tailor made for trail runners and riders, with an advanced, sporty design.the large, individual lens creates a large shield of protection that is reminiscent of the coverage found in trail goggles. The plutonite lens construction shields from impacts and abrasions while also blocking out 100% of harmful uv light radiation. For an enhanced visual experience, the lens comes with oakleys, patented, prizm technology which boosts detail, colour, and contrast.the half rim frame provides a brow less design that allows for an improved upper field of view. The remaining o matter frame keeps the glasses lightweight while retaining a great level of durability. To stabilise the sunglasses the nose pads and earsocks are coated in an unobtainium rubber that keeps the glasses in position even when they meet perspiration.the advancer nosebridge system positions the frame to block light while allowing you to quickly open up the airflow to combat fogging and overheating.featuresprizm trail lens ndash specifically tailored towards trail riders and runners36% light transmissionbest suited to medium lighting conditionsincreased contrastpurple base lens colourprizm lens technologyfull uv protectionbrow less design allows for improved upper field of viewadvancer nosebridge positions the frame to block light while opening airflow to combat fogging and overheatinginterchangeable temple lengths for improved helmet compatibilitydurability and all day comfort of lightweight o matter frame materialnon slip unobtainium nose pads and earsocks increase grip even with perspirationthree point lens fit for precise optical alignmentframe medium to large facesplutonite lens materialbuy oakley sports sunglasses from chain reaction cycles, the world's largest online bike store.