A RACE SHOES WITH PROPULSIVE POWER. Vaporfly Inspired The Nike Zoom Fly 3 shoe offers runners distance comfort and durability throughout the race. The propulsive force of the carbon fiber sole plate helps you keep the pace kilometer after kilometer. The full length Nike React midsole balances cushioning and responsiveness with a lightweight, durable foam that delivers an extremely uniform gait. Transparent upper evokes speed. The inner sleeve and low collar offer your foot a perfect fit for the race. A flat carbon fiber sole inside the midsole can increase or reduce the amount of fiber layers for maximum flexibility when running.