Oakley Airbrake MX Tuff Blocks Black Gunmetal - Prizm MX Torch IridiumOakley Airbrake MX Tuff Blocks Black Gunmetal Prizm MX Torch Iridium 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