Never go to battle in the cycling trenches without your precious Oakley Flak Jacket XLJ glasses. The frames use Oakley's lightweight O-Matter material and feature a semi-rimless design for an extensive field of view. Their Plutonite lenses filter 100% of all UV rays, meet the highest impact protection standards and the XLJ designation means the lenses offer more coverage for larger faces. The lenses also boast a hydrophobic coating for max visibility on wet days and to repel skin oils and other contaminates. Plus, the ear and nose pieces are made of Oakley's Unobtanium to keep your glasses exactly where you want them and two nose pieces are included with every frame for a perfect fit.