The Nike Air Zoom Structure 21 'Black' sneaker has been redesigned to offer a sleeker profile and increased lightness compared to its predecessor. This updated version boasts a lighter iteration of Flymesh in its upper, providing enhanced breathability and flexibility. The shoe's breathable upper is further strengthened by the incorporation of Flywire and Dynamic Fit technology, which contribute to stability and a personalized fit. Moreover, the responsive Nike Zoom Air cushioning is strategically placed in the forefoot, ensuring exceptional comfort and energy return during any activity. Additionally, the firm structure of the heel offers an added level of support for the wearer. With its combination of cutting-edge technologies and stylish design, the Nike Air Zoom Structure 21 'Black' sneaker is a perfect choice for athletes and fitness enthusiasts alike.