Nike MD Runner 2 (GS) Girls Running Shoe based on a 90s retro style, the Nike MD Runner 2 (GS) mixes original details with a breathable mesh upper & suede overlays. Its injected Phylon midsole provides lightweight cushioning. Breathable mesh upper with suede overlays for durability. Injected Phylon midsole reduces weight & increases cushioning. Thin rubber outsole with waffled texture offers durable traction. Big Swoosh design trademark adds throwback style.