Originally published on http://technabob.com/blog/2014/09/16/back-to-the-future-2-nike-mag-replicas/ Back in 2011 Nike released its official take on the MAG sneakers that Marty McFly wore in Back to the Future II. But those shoes were a limited edition and were auctioned off, which meant that for many of us they may as well have cost as much as a time machine.