The ultimate cushioned, high mileage trainer for the neutral runner/underpronator seeking guidance from heel strike to toe-off. Breathable open mesh upper. SpEVA(TM) midsole bounces back to assist during propulsion phase of the gait cycle, large-volume heel and forefoot GEL® Cushioning Systems, Trusstic System® for lateral stability and guidance of the foot. Forefoot DuoSole® outsole with AHAR® heel plug. Wt. 10.5 oz.