The Nike Zoom Fly 6 Citron Pulse Indigo Burst is engineered lighter than ever, reimagined to deliver the cushioning and responsiveness runners demand for daily training and race day performance. A soft, sock-like liner mesh provides high-end training comfort without sacrificing weight or breathability when it matters most. The new ZoomX midsole features Nike's most lightweight and resilient compound, returning maximum energy with every stride so you can push harder and recover faster. Built for runners who refuse to compromise between speed and comfort.