The Nike Mag has returned. After appearing four years ago, and raising nearly $10 million for the Michael J. Fox Foundation, Nike is (finally!) delivering on power lacing when the sneaker drops in Spring 2016. These beauties will only be available via auction, at first. But if the last go-round with the Mag taught us anything, some dudes will pay anything to cop a pair of these.

Check out the images above and get ready to count down the days until these find their way to the public. So far, the only person to have these is Marty McFly himself, who showed up at the Jimmy Kimmel Show rocking his last night:

Images courtesy of Nike