As the "Back To The Future II" film, which premiered in 1989 celebrated its anniversary last Oct. 21, Nike revealed its promise to create a self-lacing pair of shoes that was featured in the film worn by Michael J. Fox's character, Marty McFly, by giving one real pair to the film's star.

Fox posted on his social media a snapshot of the letter sent to him by Nike's shoe designer Tinker Hatfield revealing that the pair of shoes in the film is finally real. "Almost thirty years ago we embarked on a journey to create a glimpse into "the future." Although the project started as science fiction, we're now proud to turn that fiction into fact," the letter read, as captured in a photo by Fox posted on his Twitter.

ABC News reported that the film, which was set in 1989, traveled 30 years into the future to Oct. 21, 2015. On the film, Fox's character discovered hoverboards, flying cars and self-lacing sneakers that was eventually realized by Nike, the same shoe company that created the said shoes in the film, and the same designer, Hatfield.

Nike even posted a message on Twitter a day earlier than the "Back to The Future II" anniversary, writing, "@realmikefox see you tomorrow," tagging Fox, which many followers got anxious about.

Of course, Fox would get the first pair, Hatfield revealed in the letter. "As the first, most celebrated wearer of the Nike Air Mag we wanted you to be the first to receive a living pair. "I meant Nike Mag,"' the letter reads.

The actual shoes, which was later on posted by Fox's organization Twitter account, showing Fox wearing the pair, is revealed to be not the last one since Nike will be creating more and will benefit Fox's organization.

"In addition to your personal pair, we're creating more pairs for support in aid of the Michael J. Fox Foundation in 2016," the letter continued. Apparently, it wasn't the first time that Nike reproduced the shoes featured in the film.

Wired reports that back in 2011, Nike released 1,510 pairs of a sneaker based on the futuristic film's prototype. However, it is only now that the shoes had the self-lacing feature.

The shoes already benefitted the Michael J. Fox foundation, which mainly funds researching on Parkinson's Disease. Hatfield even revealed in his recent letter to Fox the amount they raised together in 2011. 

"We hope that the combined effort will raise even more than the $9.4 million collected in 2011 and contribute in some way to eliminating Parkinson's Disease in our lifetime!" Hatfield wrote.