The adidas Ultra Boost 2021 Triple Black gets constructed out of a new Primeblue material on the upper, a high-performance recycled material made in part with Parley Ocean Plastic. 50% of the upper is textile, 75% of the textile is Primeblue yarn. Black dominates this entire shoe including the lace cage, heel counter, laces, inner liner, branding, and the entire Boost midsole.