The Nike VaporFly 4% FlyKnit London Marathon (2019) is a limited-edition release designed to commemorate the prestigious London Marathon – one of the World Major Marathon events. It features unique detailing and branding specific to the race. Beneath the ZoomX foam, there’s a full-length carbon fiber plate that helps propel the runner forward by providing a spring-like effect during toe-off. This technology contributes to the shoe’s reputation for maximizing running economy. The upper of the VaporFly 4% FlyKnit London is constructed from Nike’s FlyKnit material, which is lightweight, breathable, and provides a sock-like fit. It conforms to the shape of the foot, reducing irritation and ensuring maximum comfort during long-distance runs. The standout feature of the VaporFly 4% that StockX appreciates is its midsole, which incorporates Nike’s ZoomX foam technology. This foam is exceptionally lightweight and responsive, providing optimal energy return with every stride. The Nike VaporFly 4% FlyKnit London Marathon (2019) was available for purchase at a retail price of $250 when it was released on April 8th, 2019.