APL Athletic Propulsion Windchill Sneaker in Rose & Energy Sz 9 EUC

Featuring the APL patented Load 'N Launch® technology tuned specifically for running, the Windchill is designed to make the user run faster while using less energy. The 3-layer FloZone upper surrounds an open air mesh bootie for lightweight comfort. This construction allows cool air to constantly flow through the shoe, while the hot air escapes out the back. Features The 8mm drop from the heel to the forefoot Load 'N Launch® technology to make the user run faster and exert less energy FloZone upper construction allows unrestricted airflow throughout the entire shoe Cool ride and extreme breathability Internal Fit System with full length open air mesh bootie keeps all foot shapes comfortable Compression Midsole carved out in key areas to reduce overall weight Provides the perfect balance of cushioning and rebound Solid rubber outsole Integrated forefoot crash pad is engineered for mid-foot strike Promote proper running form Weight: 9.9 oz. The Load ‘N Launch® 6-spring running device is designed to maximize force by combining the exertion produced by the runner with the compression/release assistance of the 6-spring system. Hinge Pin: Secures Load ‘N Launch® components while maintaining alignment Top Plate: Provides platform for transfer of energy Vent Holes: Allow air transfer for comfort and improved compression Bottom Plate: Provides solid foundation for springs to efficiently compress and release stored energy Compression Springs: Store and release energy