The adidas Ultra Boost 4 Core Black features an all-black Primeknit upper that matches the midfoot cage, Stretchweb rubber outsole, and heel counter. A gray inlay on the medial side of the contrast white Boost midsole deviates from the black-and-white color pattern. The sneaker has a black outsole with the Ultraboost logo on its heel, and black 3-Stripes printed on the side, completing the sleek design. Released on November 27, 2017, with a suggested retail price of $180, this sneaker blends comfort and performance with its Core Black Primeknit upper, molded Fitcounter heel, and burrito tongue for an easy fit. The lightweight Boost midsole and energizing Stretchweb outsole make it perfect for both gym workouts and running on the pavement.