Back in 2011 Nike produced 1,500 limited edition replicas of the Nike MAG, the self-lacing sneakers Marty McFly wore in Back to the Future II. And while they were an awesome replica, they didn’t actually self-lace and it was impossible for most people without plenty of extra cash lying around to get their hands on a pair.

A few days after that announcement, shoe engineer Tinker Hatfield—creator of the Pump sneakers and designer of the MAG replicas—said they were still working on the self-lacing technology and would have it ready by 2015, the year they travel to in Back to the Future II. 2015 has come and gone with no self-lacing sneakers, but hope is not lost. Nike has released a teaser video for self-lacing sneakers called HyperAdapt 1.0, and you can check it out below.

We’ve entered into the final days of the year 2015 which, as you’re probably aware, is the crazy future year that Marty McFly (Michael J. Fox) and Doc Brown (Christopher Lloyd) travel to in the delicious creamy center of the Back to the Future trilogy.

Back in August CineFix shared nine fun facts about the beloved movie franchise for their “Things You (Probably) Didn’t Know” YouTube series as part of the 365-day celebration of our reaching the year in real life. Now with 2016 fast approaching, they’ve decided to dedicate their final installment of the series this year to seven new things about the movies that you might not have known about.

You can check out the video below.