The Oakley O2 XL is the perfect combination of a large lens with a wide-open streamlined design, which expands your peripheral view in every direction. Flexible O Matter chassis around the base of the goggle conforms to the shape of your face. All day comfort of moisture-wicking triple-layer polar fleece foam ensures that the goggle stays in place. Discreet frame notches at temples provide compatibility with most prescription eyewear, without compromising fit. Moto-style strap attachments provide helmet compatibility of a variety of shapes & sizes.