Released in November 2016, adidas unveiled the eagerly anticipated Ultra Boost 4.0 'Core Black'. This latest version of their high-performance running shoe showcases a sleek and solid black Primeknit upper, seamlessly matched with a black midfoot cage, heel counter, and Stretchweb rubber outsole. The focal point of the shoe lies in its white Boost midsole, accentuated by a subtle grey insert on the medial side, providing a tasteful contrast to the predominantly black and white color scheme.