New Balance FuelCell Echo Grey/Blue/Orange Women’s size 9.5 Used condition & a little dusty but GREAT condition!!! Left tongue tag torn but still intact. The New Balance FuelCell Echo shoes are fast, modern, and are designed with an energizing midsole technology that provides comfort on the sole of the foot with every stride, making them perfect for training. In addition, these shoes have a TPU heel pad that ensures superior performance.