The black and white soles are a particularly cool aesthetic, and it would've been fun to see them cycle through a number of different graphical designs à la the FES Watch U. But the two alternating patterns have been forged purely to plug both brands involved. That makes sense, because neither company has plans to commercialize the concept -- the collab was just an excuse to create something fun and distinctive to install in Sony's booth for the duration of IFA.

Manufacturing an e-ink sneaker that's functional, comfortable and washable (batteries and water don't mix well) is perhaps a bit too complicated as it stands, anyway. Case in point: ShiftWear has been trying to do just that for years now, even after raising nearing $1 million in a crowdfunding push of its own and selling preorders online. In an update earlier this year, ShiftWear admitted the project is dead in the water until it receives another cash injection.

Still, the FES x NB sneaker is a funky look at a fashion future where we don't just have screens in our pockets and on our wrist. We wear them on our feet, too.

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