The Adidas Ultraboost 21 represents a significant evolution in the Ultraboost line, focusing on maximizing energy return through extensive prototyping and testing. This iteration aims for a harmonious balance of weight, cushioning, and responsiveness, delivering an enhanced running experience.

• Sock-like fit
• Lace closure
• Adidas Primeknit+ upper
• Textile lining
• Supportive heel counter
• Boost midsole