Replacement lenses for the Fall Line XL goggle, to replace your existing lens or to have as a spare. Prizm is a revolution in lens optics built on decades of color science research. Prizm lenses provide unprecedented control of light transmission resulting in colors precisely tuned to maximize contrast and enhance visibility. Oakley offers a comprehensive array of performance lenses that match specially engineered base tints with unique Iridium coatings, designed to precisely tune, contrast and balance light transmission.