The kids' FuelCore Nergize offers sleek, slip-on style that makes gearing up to go a breeze. The clean, modern upper is breathable and lightweight, pairing well with whatever outfit they can whip up. EVA midsole cushioning offers reliable cushioning for all-day comfort.Synthetic/mesh upper, IMEVA (injection-molded EVA foam) midsole for firm yet flexiblecushioningBootie construction for a custom fitFuelCore uses a combination of foam densities. NB memory sole comfort insertRubber outsole