adidas Ultra Boost 2020’s new and advanced Primeknit upper features Tailored Fiber Placement (TFP) technology. The innovative technique lays down fibers to the millimeter, resulting in a high-performance, lightweight upper which is precisely stitched and constructed. From take-off to landing, runners can initiate control with a shoe that exactly calibrates foot support to fully unleash the explosive energy of boost. Meanwhile, the Boost midsole captures the energy in every stride and returns it at toe-off to propel runners forward, allowing them to take their run to the next level with out-of-this-world energy return. At the same time, the 3D Heel Frame – a stripped-back design which cradles the heel and locks it firmly in place – brings the perfect mix of adaptability and support.