Oakley Standard Issue Flak® 2.0 XL Blackside Collection sunglasses with Prizm Black Polarized lens feature Oakley's three-point fit for all-day comfort. Oakley's patented HDO technology maintains visual clarity along the full curve of the lense while filtering out 100% of UV radiation. With Unobtainium ear-socks and nose-pads and an impact-resistant frame, Flak 2.0 XL Sunglasses are tough enough to keep up with your active lifestyle.