As an evolution of the legendary O-Frame goggle, the O2 family has Oakley DNA pumping through every vein. The Oakley O2 XM extends the O2 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 chassis conforms to your face with moisture-wicking triple-layer-polar fleece foam to provide all-day comfort. The O2 XM has been engineered for seamless compatibility with all leading helmet brands, giving you the flexibility to choose the helmet that fits your style. With unmistakable Oakley style and the comfort and performance to match, the O2 XM is ready to ride.