The adidas Y-3 Runner 4D IOW 'Black' presents an elegant design on a flexible running shoe, offering the option to customize its features. Users can choose between a Primeknit sock or a traditional sockliner and detachable tongue. The upper is enveloped in a black mesh overlay that seamlessly extends to the revolutionary 3D-printed midsole, composed of a combination of light, oxygen, and liquid resin. The forefoot features cutaway details, revealing lattice-like sidewalls for added style.