Elevate your running game with these adidas UltraBoost 21 sneakers in size 8.5. The blue Primeknit upper material and the stylish sneaker design are perfect for athletic men who want to combine functionality and fashion. These shoes are perfect for running, jogging, or any other outdoor activity. The adidas UltraBoost 21 sneakers are the perfect addition to your shoe collection. With a UK shoe size of 8 and a US shoe size of 8.5, these shoes are a comfortable fit for any man. The product line is designed for athletic shoes, making them a great choice for anyone who wants to optimize their performance.