Oakley: Polarized Flak Jacket Sunglasses

The Oakley Polarized XLJ Flak Jacket might resemble the popular Half Jacket XLJ designs but there's more to the innovations than a redesigned frame. The Polarized XLJ Flak Jacket represents a new generation of Oakley sport eyewear performance. The interchangeable polarized lenses have a permanent hydrophobic lens that repels skin oil rain and sweat to optimize optical performance.
Source: backpacker.com