The Vomero 18 running sneakers feature a dual-density midsole with ZoomX foam stacked on top of ReactX foam, which is 13% more responsive. An engineered mesh upper offers soft breathability. Pods are placed around the outsole to help enhance agility and smoother heel-to-toe ...The Vomero 18 running sneakers feature a dual-density midsole with ZoomX foam stacked on top of ReactX foam, which is 13% more responsive.