OAKLEY Airbrake MX Sexton Signature w Prizm MX Sapphire Iridium Lens BlueA first fully serviceable goggle with high impact resistance that makes you invincible, this landmark of technology is the first ever MX design with a lens of pure Plutonite. Its 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