In January 2019, Shawn Yue, the renowned designer behind the Hong Kong fashion brand, Madness, collaborated with adidas to create the visually captivating Madness x UltraBoost 4.0 sneaker in the colorway 'Black'. This distinctive sneaker flaunts abstract designs characterized by contrast paint splatter accents, while its upper is skillfully crafted using adidas’ cutting-edge Primeknit mesh technology. To ensure durability and support, the sneaker features a Three-Stripes leather lacing cage and a suede heel piece. Furthermore, the shoe is equipped with Boost cushioning technology, providing wearers with an amplified energy return. The Madness x UltraBoost 4.0 in 'Black' showcases an exceptional fusion of style and functionality.