Actor Michael J. Fox is seen on a screen during a video message holding a 2011 NIKE MAG shoe
Actor Michael J. Fox is seen on a screen during a video message holding a 2011 NIKE MAG shoe, based on the original NIKE MAG worn in 2015 by his "Back to the Future" character Marty McFly, at the shoe's unveiling at The Montalban Theatre in Hollywood, California September 8, 2011. Reuters

2011 NIKE MAG shoes, based on the original NIKE MAG worn in 2015 by the Back to the Future character Marty McFly, played by Michael J. Fox, is displayed during its unveiling at The Montalban Theatre in Hollywood, California September 8, 2011. Fifteen hundred pairs of the 2011 NIKE MAG will be auctioned on eBay with all net proceeds going directly to The Michael J. Fox Foundation for Parkinson's Research.