All signs pointed to the return of the Nike MAG in 2015. But as the highly anticipated date of Oct. 21 came and went, it was only Michael J. Fox that got a pairthe rest of us had to wait until the Fall of 2016 when a charity raffle was held, with less than 100 pairs of the auto-lacing version available to the public. 

In the years since, auto-lacing sneakers have become more widely available, with the HyperAdapt 1.0 debuting later in 2016, followed by the first performance model to utilize the technology: 2019's Adapt BB. But it all started 30 years ago today, when Back to the Future Part 2 released on Nov. 22, 1989.

Back when the Nike Mag returned in 2011, we spoke at great length with the shoe’s creator, Tinker Hatfield, and the developer that helped make its original comeback a reality, Tiffany Beers. In honor of the 30th anniversary of the shoe's debut, here are 15 things you may not have known about the infamous sneaker.