TIME fashion

Nike Is Giving Away Self-Lacing Back to the Future Sneakers

The money raised in the raffle will go to the Michael J. Fox Foundation, to help find a cure for Parkinson’s

Eighty-nine pairs of Nike’s limited-edition, self-lacing Back to the Future Part II-style Nike MAG sneakers will be given away in a charity raffle.

Entry to the online draw, which begins Tuesday and ends on Oct. 11, costs $10 and there is no limit to the number of tickets entrants can buy. All of the money raised in the raffle will go to the Michael J. Fox Foundation (MJFF), to help find a cure for Parkinson’s.

The futuristic sneakers can lace themselves thanks to an internal cable system comprised of fishing line and a pressure sensor located in the sole that responds to the weight of your foot as you move with “an algorithmic pressure equation,” Nike told Wired. The heels then light up to signal when the shoe is tightening, as well as when the battery needs to be charged.

Raffle entrants must live in the U.S. or Canada, and the winners will be notified on Oct. 17. The raffled sneakers will be in U.S. men’s size 7, 9, 11 and 13. There will also be private auctions for a pair of the sneakers in Hong Kong, London and New York City.

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