Crafted for the woman who wants to exceed her limits, the adidas By Stella McCartney Strung Prime X2 running shoes are a blend of function and style. The Boost technology in these shoes provides superior comfort, while the Primeknit upper ensures a snug fit. The shoe also features an adidas by Stella McCartney logo, making it not only a performance enhancer for your 10k city race but also a statement piece.