A creative collaboration from the world of skateboarding, this design inspired by influential athletes is shaped with a classic keyhole bridge and the curves of rounded lens orbitals, and we engineered it with the convenience of an interior kick-up feature that lets you clip it to your shirt. 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.