The Adidas Ultraboost 21 is the perfect shoe that combines fashion and performance. Featuring a black and grey colorway, 21 edition with futuristic designs, high performance technology for optimum comfort, stretchy Primeknit upper, sock-like feel that forms to your foot, flexible stretchweb outsole, Boost cushioning, Continental rubber for traction, lace up closure, and an overall supportive and lightweight feel.