The Yeezy Foam Runner MX “Moon Gray” is an innovative piece of footwear designed by Kanye West and YEEZY. The Yeezy Foam RNNR (Runner) debuted in Summer 2020 and is a cross-pollination between a traditional slip-on sandal and a shoe. The ultra lightweight design with various perforations across the upper is composed of a mixture of EVA foam and harvested algae. The first edition of the Foam RNNR labeled "MXT," which seemingly stands for "mixed," features the “Moon Grey” colorway features a marbled blend of dark gray and tan. Release date: March 26, 2021.