adidas launched the Ultra Boost J 3.0 'Multi-Color' in July 2017, offering a vibrant and eye-catching design for kids. The Primeknit upper of this performance running shoe showcases a combination of bright colors against a black base, amplifying the rainbow hues. The lining, laces, and TPU midfoot cage also feature black accents, enhancing the contrasting effect. To maintain a sleek appearance, the embossed Ultra Boost branding on the shoe's heel counter adopts a tonal finish, contributing to a blackout style. Furthermore, a white, full-length Boost midsole creates a striking contrast with the black Continental Rubber outsole, ensuring durability and traction.