Adidas Ultraboost 21 Running Shoe Core Black/Core Grey Men's US 8.5 NWOT Elevate your running game with these Adidas Ultraboost 21 running shoes. Designed for men in Core Black/Core Grey colorway, these sneakers are perfect for athletic activities with its W shoe width and W100% Nylon material. The Adidas Ultraboost 21 model boasts the brand's innovative technology for a comfortable and durable wear. These shoes are perfect for any man looking for a high-quality athletic shoe. The sneaker's style is versatile, making it suitable for both casual and athletic wear. Get ready to take your running experience to the next level with these Adidas Ultraboost 21 running shoes.