Fashion designer Stella McCartney has completely transformed the Ultra Boost X Mid with her latest creation, the 'Legend Blue' edition. This version of the shoe features an enhanced Primeknit upper that offers more coverage, thanks to a calf-length sock that is adorned with a striking contrasting color band and a convenient pull loop. The overall design is further enhanced by the addition of wraparound oversized laces, a molded heel counter, and a unique free-floating arch. Providing a fresh and stylish update to the original, the 'Legend Blue' edition showcases McCartney's innovative approach to fashion.