The Nike Zoom Pegasus Turbo is the Pegasus you know and love with major upgrades for speed. The featherlight upper looks as fast as it feels, while the revolutionary Nike ZoomX foam that was designed for elite Nike runners during the Breaking 2 attempt brings record-breaking speed and responsiveness to your daily training runs. Ultimate Response Nike worked with elite marathoners in Kenya to develop the Nike Zoom X foam, which delivers Nike's greatest energy return yet. It sits directly under your foot for a heightened response as you hit your stride. Secure Fit Flywire cables provides a system of incredibly strong cables that work together with the laces to wrap your midfoot and arch for snug, adjustable support. Lightweight Comfort The translucent upper material is designed to look like it's moving while standing still, and it's incredibly lightweight. The heel collar tapers away from your Achilles for long-distance comfort.