The newest addition to the Nike Air Zoom Structure series has returned. The Structure 23 is built for runners at any level looking to prioritize comfort, without sacrificing performance. The Zoom Air Cushioning installed in the forefoot grants immense energy return, to give you a powerful strike forward with every stride. The breathable upper is strategically designed with perforations at the midfoot and forefoot, to increase airflow, and provide the premium support needed when training outdoors. As a result of high demand from runners across the globe, Nike have implemented a crash pad placed at the heel to deliver an extra cushioned barrier, granting smoother heel-to-toe transitions for an unbeatable, responsive ride.