As an evolution of the legendary O Frame goggle, the O Frame 2.0 PRO family has Oakley DNA pumping through every vein. The O Frame 2.0 PRO MTB extends the O Frame 2.0 PRO style and performance to a mid-sized fit, but there is nothing medium about it. The large lens with streamlined frame geometry expands peripheral view in every direction. Features: Flexible O Matter frame optimized for comfort, fit and maximized peripheral view. Triple-layer face foam fleece to wick away sweat. Includes an anti-fog treated high-impact resistant lens. Discreet frame notches at temples to provide compatibility with most prescription eyewear, without compromising fit.