The Oakley Half Jacket XLJ Replacement Lenses for your Oakley Half Jacket sunglasses. The XLJ lenses make a great upgrade for the regular Half Jacket frame if you"re looking for better eye protection for sports like mountain biking [OAK0208]. As usual, XYZ Optics are in effect, refracting light in all the right ways to keep your vision true. **CLICK THE SIZING/INFO CHART BELOW FOR LENS TINT INFORMATION