Oakley has optimized the lenses with a permanent coating called Oakley Hydrophobic™ that maintains a smudge-resistant barrier against skin oils, sunscreens and lotions, and even repels dust and dirt. That’s in addition to repelling water and preventing wet sheens from corrupting your point of view. You also get the unbeatable clarity of High Definition Optics® (HDO®) including patented technologies like XYZ OPTICS® for crystal clear vision along the entire lens contour. The optics are so sharp, they exceed ANSI Z87.1 standards.