The adidas UltraBoost 21 'Halo Blush' updates the performance running shoe with a subtle palette and a sustainable build, highlighted by a peach-colored Primeknit+ upper that incorporates recycled Parley Ocean Plastic. A molded heel counter and midfoot cage provide added support, while a soft textile lining offers step-in comfort. Lightweight cushioning comes courtesy of a full-length Boost midsole, supported underfoot by a Continental rubber outsole and adidas’ Linear Energy Push system, which increases forefoot and midfoot stability for a more responsive ride.