Turbine cranks up the active look with interchangeable icons plus inset zones of sure-grip Unobtainium. Along with clean lines of comfortably lightweight O Matter and a lens shape inspired by our popular Hijinx sunglass, its durability and performance would make a sport frame jealous. High Definition Optics (HDO) is a collection of patented technologies that allow Oakley eyewear to meet or exceed the testing standards of the American National Standards Institute for optical clarity, visual fidelity, and impact resistance. One of the most optically pure materials used in eyewear today, it maximizes clarity and impact resistance while filtering out 100% of all UVA, UVB, UVC and harmful blue light up to 400nm. Not a coating, the UV protection is from the lens material itself.A patented innovation that ensures the frame makes contact only at the bridge of the nose and the sides of the head. It holds lenses in precise optical alignment with a secure fit that eliminates the pressure points common with frames that hook the ears. Lenses with this frame: Dark Bronze: Excellent all-purpose contrast-enhancing lens for sunny conditions.