Design: Woven upper inspired by the pinnacle race shoe, the Cloudboom Echo 3 Light and breathable construction for a comfortable, seamless fit In-Shoe Comfort: CloudTec PhaseA(R) midsole structure creates a seamless heel-to-toe transition Made with a refined Heliona" superfoam compound for a bouncier, responsive ride Pronounced forefoot rocker helps with propulsion Additional Details: Best for: Road running, short runs, everyday training, tempo runs, fast training, interval training Contains at least 20% recycled content by weight The polyester in the upper contains at least 90% recycled content Weight: 273 g / 9.6 oz