Even the world's best lenses can't do their job if they're coated with sheens of water oily smudges or those aggravating little specks of dirt and dust. That's why Oakley engineered a kit that lets you apply a Hydrophobic™ coating on virtually any kind of eyewear lens. The durable coating makes rain and sweat bead up and roll off and its anti-smudge technology makes it easier to keep the lenses clean.