With an open-edge design of lightweight O Matter® frame material, the Oakley Bottlecap sunglasses offer an unobstructed field of downward view. Patented XYZ Optics® maintain razor-sharp clarity, even with lens curvature that opens peripheral vision. The polarized lenses are specially engineered to block the blinding rays of glare that are magnified by flat surfaces such as snow, water and pavement.