Singer Jang Woo Hyuk revealed some cool futuristic sneakers that can automatically tie it's own shoelaces. On September 24th, Jang Woo Hyuk tweeted, "Late night good news. It was really, really hard to get this limited edition of the Nike Mag "Marty McFly" but it finally came. I'm revealing it to you guys first. Even though I'm happy to have these I'm even more glad that I'm also helping out the Michael J. Fox Foundation for Parkinson's disease," along with pictures above. The Nike Mag "Marty McFly" that Jang Woo Hyuk purchased were a futuristic model sneakers from the hit movie, 'Back to the Future'. Known for his love towards sneakers and being a big fan of Michael J. Fox, Jang Woo Hyuk bought the Nike Mag "Marty McFly", estimated to cost around $3500 - $5000 at auction. It was also revealed that all the proceeds from this shoe will be donated towards the Michael J. Fox Foundation to combat Parkinson's disease. Meanwhile, Jang Woo Hyuk also revealed that he will be using these shoes as props in the music video for his upcoming mini album slated for release in November. Source & Photo:�Nate