If anyone has seen Back To The Future 2, you might remember the Nikes Michael J Fox had on when he was in the future in the movie. Well their is a petition to try to bring them out. They never came out in stores, they were only for Michael J Fox in the movie. Go to the link below and check it out.
I found a good picture of them but I couldn't copy it from the site. Go to ketzer.com and go to Back to the Future movie props and look under Back to the Future to and they will have a pic of them their.