"That's insane. That's really great," Michael J. Fox said after getting a pair of the Nike Air Mags he made famous in the film.

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Yes, that is McFly himself, Michael J. Fox, putting on "power lace" shoes on Oct. 21, 2015 – the day McFly and Doc travel to in the movie. Nike sent him a pair of Nike Air Mags on Wednesday to prove that "Back to the Future" got its shoe prediction right.

We've known for months that Nike was working on the shoe. In January, Tinker Hatfield, the man who designed Nike Mag for the 1989 movie, said his team was working hard to release the shoe this year.

But there is kind of a catch. Nice Kicks is reporting Nike is only releasing 1,500 pairs of the shoes to be auctioned on eBay. That might sound like an odd fit, but all net proceeds will be going to the Michael J. Fox Foundation for Parkinson's Research.

Fox was diagnosed with Parkinson's when he was 29 years old, and at the time, doctors said his prognosis wasn't great.

"I had a twitch in my pinkie, and I'd thought I hurt my shoulder doing some stunt or something," Fox said on the "Late Show." "And the doctor said, 'You have Parkinson's disease.' He said, 'The good news is that you have 10 years of work left.'"

Nike hasn't said whether it plans to mass-produce the shoes, but maybe it's too busy making our other dreams come true?

This video includes images from Getty Images. 

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