Oakley's Three-Point Fit maximizes comfort while holding the lenses in precise optical alignment, letting the innovations of High Definition Optics® (HDO®) do their work. Optical performance and impact protection meet ANSI Z87.1 standards, and with 8.75 base lens curvature, you’ll have extended peripheral vision and improved side protection against sun, wind and impact. Patented XYZ Optics® helps keep vision sharp at every angle of view. Oakley has engineered this sunglass with durable yet lightweight O Matter® and matched it with pure Plutonite® lenses that filter out all UV.