The adidas UltraBoost 20 ‘Signal Cyan’ showcases gradient blue coloring on a breathable knit upper made with Primeblue fabric, a performance material constructed entirely from recycled plastic, including at least 75% Parley Ocean Plastic. The sneaker’s vibrant finish is complemented by iridescent detailing on the molded midfoot cage and full-length Boost midsole, which generate shimmery pops of color with each step.