Yushuai 13 is a high-strength integrated woven upper. The vamp structure is divided into three layers, the outermost layer is a high-strength woven vamp, and the inner layer is a high-comfort, sub-regional thin sponge filled lining. The high-strength woven upper of the outer layer is similar to Nike's Flyknit, but the deformation and ductility of the upper are worse than that of Flyknit, which only provides high-strength upper support. The outer vamp is too hard. If you want to wrap it comfortably, you have to work hard on the lining. Li Ning used segmented materials in the lining, especially the toe, instep and heel.