These innovative shoes celebrate an icon and equal rights trailblazer; Billie Jean King. Assembled at adidas transformative digital SPEEDFACTORY USA facility in Atlanta and releasing in NYC, home to one of the world's greatest tennis championships, and the last grand slam of the year. These running shoes were created for tennis legend Billie Jean King whose "battle of the sexes" victory in 1973 broke new ground. Built with responsive Boost cushioning using state of the art glueless fused bonding to give you the most direct Boost comfort and energy return ever. These performance shoes enable a stable and adaptive stride via the SPEEDFACTORY floating Torsion bar. The flexible knitted upper has a programmed adaptive fit system for a natural feel for unmatched precision fit. Each shoe has an imbedded NFC chip in the tongue offering authentication and a unique digital experience.