A trace fiber upper offers zonal function support without excess seams or layers and comes in vibrant colors that brighten up any run in these Black / Red New Balance FuelCell Propel men's neutral cushioned running shoes. Built for speed, the NB men’s road runner has an incredibly lightweight solid rubber and NDurance outsole. Fuel your run with fun. The ultra-responsive FuelCell Propel is engineered to provide the NB's most pinnacle propulsion and snappy energy return. The NB high rebound FuelCell formulation is new and improved, delivering a unique underfoot liveliness that’s designed for the road or the gym.