The New Balance Women's FuelCell SuperComp Pacer debuts Energy Arc technology, a cambered carbon fibre plate combined with a cut out running through the heel area to let the foam deform, giving a greater range of motion for the plate. It also uses a firm bed of FuelCell midsole foam to provide the propulsive and responsive ride you need to make the best of your runs. Up top, the upper is a barely there engineered mesh with a highly breathable and super lightweight feel. All together the FuelCell, carbon plate, low stack height, and single layer upper, give a feeling of speed and ground feel to drive you on when race day comes.