Nike has unveiled its long-awaited sneaker with self-tying "adaptive" laces.

It's called the HyperAdapt 1.0, and Nike CEO Mark Parker introduced it at the Nike Innovation 2016 event in New York City this week.

How does a sneaker tie itself? Duh!

"When you step in, your heel will hit a sensor and the system will automatically tighten. Then there are two buttons on the side to tighten and loosen. You can adjust it until it's perfect."

That was how Nike senior innovator Tiffany Beers explained it.

The technology has been in the works since 2013, and it's based on what went into the Nike MAG -- a replica of Marty McFly's self-lacing sneakers in "Back to the Future" that Nike made last year.

Nike said the HyperAdapt makes use of a "more technical, sport version" of the automatic tying mechanism.

The HyperAdapt 1.0 will be available in three colors to Nike+ members this holiday season. The company said interested buyers can create an account online and sign up for updates about the shoe.