The New Balance Fuelcell Propel women's running shoe is designed and engineered with an energizing midsole technology to help deliver matchless underfoot comfort. The trace fiber upper provides zonal function support, without excess seams or layers. The stretch bootie construction creates a seamless fit and feel. The incredible FuelCell foam delivers a propulsive feel to help drive you forward. The N-Durance® rubber compound offers maximum outsole durability.