The Epic Phantom React Flyknit JDI 'Indigo Fog' was released for the fall running season on August 15th. The laceless design provides runners a slip-on fit that's secured by stretchy yarns across the Dynamic Fit collar. A Flyknit upper offers maximum breathability with minimal weight, while a molded heel clip provides needed stability. Underfoot, the Nike React outsole cushions the foot with its data-informed traction design.