The Yzy Knit Runner “Sulfur” is the launch colorway of Kanye West’s slip-on shoe constructed entirely of a knitted textile material. A September 2021 release, the “Sulfur” introduces the Yzy Knit Runner, an evolution of previous Yzy models like the Yzy Foam Runner. The lower portion of the laceless shoe, including the sole, appears in a yellow or Sulfur-colored woven textile while the ankle is dressed in a tan hue. The shoe’s size is printed in black on the collar. A thin rubber outsole with a herringbone traction pattern finishes off the futuristic design.