"Back to the Future II" made many predictions about the future. Parts of the movie got it right, like the invention of hoverboards and video calling. But there's one thing it didn't predict.
One shortcoming - if you can call it that - is that the movie didn't predict that a pair of sneakers could help cure Parkinson's Disease.
Nike has announced that it has once again paired with Marty McFly himself, Michael J. Fox, releasing 89 pairs of his character's famed, self-lacing Nike Mags and putting them in a public raffle.
The team got together for a very similar action back in 2011, which raised and estimated $10 million in 10 days. Now, it's back for more.
In order to get a pair for yourself, you'll need to create or log in with a Nike+ account by clicking here, and you'll have to donate $10 to be entered. You can also enter using the Nike+ app on your smartphone or tablet.
There's also no limit on entries, so if you really, really want to get your hands on a pair, enter till your heart is content - the more you enter/donate, the greater your chances are of winning.
All of the proceeds are going to the Michael J. Fox Foundation, which supports research for Parkinson's Disease, an affliction of the central nervous system that causes uncontrollable shakes, tremors and ticks. Michael J. Fox was diagnosed with the disease in 1991 when he was only 29 years old.