Oakley Flak Jacket

I was interested in buying a pair of Oakley sunglasses Flak Jacket XLJ, but I do not know what it means XLJ.

"Extra Large"

The framework is similar, but the lenses have a more square and wider or broader coverage accordingly.

If you look at the pictures on the lenses of Oakley's website, you can easily see the difference with bulletproof vests and ordinary XLJ - is the lenses.

It means a slightly larger lens that gives a little more coverage.