Dial up your performance in a statement running shoe that sports a full-foot boost midsole for superior energy return and just-right, trampoline-like cushioning along with a sock-like fit thanks to the breathable Primeknit upper. Designed for a smooth heel strike-to-midfoot transition with the Dual TORSION SYSTEM and finished with the grippy-yet-flexible ZONEMOTION outsole, the UltraBOOST will make each mile a better one. Style Name: Adidas By Stella Mccartney Ultraboost X Primeknit Mid Sneaker (Women). Style Number: 5403274. Available in stores.