I found these Oakley Flak Jacket Livestrong XLJ on line when I began ordering a custom pair of Oakley's.  I was customizing the half jacket style in black and yellow which were going to cost $130.  I liked the style of the Flak Jacket XLJ's better than the half jacket and they were going to cost more customizing thru Oakley direct, so I decided to order the Livestrong XLJ's.  In addition to the styling these fit my face perfect.  I use these for jogging and they are not loose having the right amount of force to hold them in place.  I have another pair of Oakley's that are 10 years old, which I use for everyday casual use.  The Oakley lettering over the bridge of the nose has worn off those, but I expect that will be the same case with the Livestrong XLJ's over time.  When you clean the lens of your sunglasses the acidity on your fingers holding the glasses by the nose piece will eventually erode the lettering.