Adidas Since its release in 15, the Adidas Ultra Boost design has been, for the most part, the same For 19, though, Adidas redesigned its most popular runner and dubbed it the Ultra Boost 19 Compared to the original design, which features 17 pieces, the new Ultra Boost 19 is made up of four key pieces — a onepiece Primeknit 360 upper, a Torsion spring plate, a 3D
