Adidas UltraBoost 21 Vivid Red Solar Black Mens Running 。Adidas Ultraboost 21 running shoes in a vibrant Solar Red and Core Black colorway. These performance sneakers feature the iconic full-length Boost midsole for maximum energy return and a Primeknit+ upper for a sock-like, breathable fit. The updated LEP (Linear Energy Push) system provides increased forefoot bending stiffness for a more responsive stride. Finished with a durable Continental Rubber outsole for superior traction in both wet and dry conditions. Perfect for high-impact running or stylish athletic wear.