Oakley O Frame 2.0 Pro MTB Goggles - One Size Fits Most - Troy Lee Designs Blue Wings - Dark Grey LensAs 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. Flexible O Matter frame optimized for comfort, fit and maximized peripheral view Triple layer face foam fleece