Airbrake MX Goggles With Prizm Lens. Prizm™ MX lenses help you see subtle transitions in dirt conditions so you can master all those split-second decisions. With high-impact resistance that makes you invincible, this landmark of technology is the first even MX design with a lens of pure Plutonite™. It's the new standard of protection and it lets you take the adapt-and-conquer approach with Oakley Switchlock™ Technology, the secret to fast and easy lens changing. The view is wide open, the comfort is beyond reason and the performance leaves other goggles scrambling for second place. High Definition Optics® - 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.