he Yeezy Foam Runner, also known as the Yeezy Foam RNNR, is a low-profile shoe with a very distinctive look. There's no upper and sole. Instead, this aerodynamic shoe is all molded together in one piece. Like many of Kanye's designs, the Foam Runner has a retro-futuristic feel. It looks like a cross between a slip-resistant work shoe and a 1980s jelly shoe. In fact, this design has been nicknamed the Yeezy Croc because of its resemblance to the foam clog. The Foam RNNR is very lightweight, and it has plenty of openings to allow air to circulate. As a move toward sustainable processes, the Yeezy Foam Runner is constructed with an innovative version of EVA that contains algae