The collaboration between adidas and British fashion designer Stella McCartney resulted in the release of the Stella McCartney x Wmns UltraBoost X ‘Clay Red’ in July 2017. This performance runner showcases a red mélange knit constructed with recycled yarn, exemplifying the sustainable approach of the partnership. To enhance stability and support, the shoe features a floating arch design. Additionally, the Boost midsole offers exceptional cushioning throughout the entire length of the shoe, while the Stretchweb rubber outsole delivers reliable traction.