Description New Balance FuelCell MD500 V9 Middle Distance Running Spikes | Dragon Fly/White Orange (Adults) For aspiring track athletes, the New Balance FuelCell MD500 V9 is a sleek, lightweight track spike great for middle to long distance races. The MD500 is equipped with a full-length FuelCell midsole that offers a propulsive feel perfect for racers striving to go faster. A 6-pin TPU spike plate with removable spikes provides an aggressive but forgiving ride perfect for a wide range of track events. Features FuelCell foam delivers a propulsive feel to help drive you forward Synthetic and mesh upper Upper features no-sew overlays for a sleek fit and feel 6-Pin TPU spike plate for an aggressive yet forgiving ride Removable spikes for easy replacement Adjustable lace closure for a customized fit   146 grams (5.1 oz)