What series of Nike shoes have an open back?

Nike's back mouth is hisacai x Nike VaporWaffle shoes. Sacai x Nike VaporWaffle made of new materials will make its debut this summer. The whole shoe body is made of black dress, and the outsole is made of brown rubber. The traditional "Black Warrior" color scheme presents a retro visual sense.

The biggest difference of shoes is the vamp made of nylon, leather and suede, which replaces the previous mesh design, and the texture is more advanced and the warmth is greatly improved. The iconic design of Donald Duck's mouth on the heel is highly recognizable and reveals a little cuteness.