RETRO RUNNER GETS A SECOND WIND. Based on a running shoe champ from the '90s, the Nike MD Runner 2 keeps all of the original details, mixing a super-breathable mesh upper with suede overlays and Phylon foam in the midsole for lightweight cushioning. Benefits * Breathable mesh upper with suede overlays for added durability. * Injected Phylon midsole reduces weight, increases cushioning. * Big iconic Swoosh design for style.