Don't get ambushed by the mist on the mountains by being well equipped with the Flak 2.0 XL Sunglasses from Oakley. The talked-about sportswear brand Oakley offer high-definition vision to help you identify lines on a mountain biking trail or enhance the colour of landscapes and light from that viewpoint you have worked so hard to get up to. Developed for cycling, hiking, skiing or mountaineering, these lightweight technical sunglasses are engineered to enhance performance outdoors. OS means one size or standard fit. Designed to perform throughout your adventure, Oakley Flak 2.0 Sunglasses feature Prizm lens technology which enhances colour and contrast to bring the detail into focus. The frame is constructed from lightweight materials and features secure Unobtanium earsocks and nosepads for a secure and comfortable performance fit.  O Matter frame - lightweight with metal accents Semi-rimless Polarized Prizm lenses - enhance colour, contrast and detail High Definition Optics Unobtainium nosepad and earsocks - increase traction for a better, comfortable fit Frame colour: black