They were a contest held by oakley during back to school season for employees. I believe there was like 10-20 of them all painted on by an artist. Who ever sold the most back packs in each district got one I believe. This was definitely a contest held about 10 years ago.
Hand Sanitizer should do the trick also. if you clean it once in a while with Handsanitizer it will keep it fresh. it also make it easier to slip them back on to the sunglasseses
In Boston i see some here and there but always the usual black Gascans and Flak Jackets. i always see bikers and anyone whose playing sports wear Oakley though. I see a lot of people wear oakley goggles when i am snow boarding though. I always wondered how common Oakley is Japan and Brazil since...