Was used as display shoes, some discoloration on sole. New with box no lid. Going through some intense interval, boot camp, or crossfit training? Then the Air Zoom Strong is right for you. Sandwich mesh upper combines with stretch textile aroudn the ankle for support and breathability. Lightweight foam midsole provides cushioned comfort and flexibility. Zoom Air unit in heel for responsiveness. Strategically placed rubber pods in heel and forefoot for traction and durability.