The adidas UltraBoost 21 brings weight, cushioning, and responsiveness to the next level. Updated with increased energy return, breathability, and sustainability, this women's running shoe claims more Boost capsules in the midsole and an upper constructed of Primeblue, a high-performance recycled material made in part with Parley Ocean Plastic. In terms of color, neutral tones of beige and ivory white are met with bright yellow and pink accenting.