Whether you're running on a treadmill or out on the road, New Balance's Fuel Cell Echo sneakers can keep you going. They get their name from the FuelCell midsole, offering the highest energy return of any New Balance foam. The upper is made from an engineered knit with embroidery details that add structure and support. It all sits atop a rippled rubber outsole designed to provide excellent traction and grip no matter what part of your foot strikes the surface.