The Nike Zoom VaporFly Next 3% Prototype combines cutting-edge technology with elite performance design, ideal for super marathon runners seeking speed and cushioning. The HV6350-001 delivers exceptional energy return and lightweight responsiveness for long-distance races. Key Features: - Dual Air Zoom units: Provides targeted cushioning and impact absorption during high-intensity running. - Full-length ZoomX foam midsole: Extends from heel to toe for maximum energy return and a propulsive feel. - Lightweight construction: Enhances speed and reduces fatigue over extended distances. - Prototype design: Incorporates advanced materials and engineering for competitive edge in marathon running.