Nike Zoom Structure 18 - Women'sThis stability icon returns, delivering the smooth, stable ride and modern design overpronaters expect.Lightweight engineered mesh upper with strategically placed bonded overlays for added support. Medial adaptive fit system wraps the arch.Co-molded, dual-density foam in the midsole with forefoot Nike Zoom unit. Decoupled crash pad for a smooth, supportive ride.Environmentally preferred rubber Waffle outsole with BRS 1000 in the heel for durability. Deep anatomical flex grooves for a smooth ride.Wt. 8.7 oz.