Last October, to commemorate the day Marty McFly traveled to in the future in Back to the Future, Part II, Nike and Michael J. Fox officially debuted the Air Mag, the self-lacing sneakers promised to us in the film. At the time, Fox had the only functional pair (he showed them off on Jimmy Kimmel Live) and there was a promise that the technology would become publicly available in 2016. Well, it’s 2016, where are our self-lacing sneakers?! Today, Nike debuted a new video of their self-lacing shoes in action, plus some more details.