Adjust the binding method. The method of leggings may be one of the reasons for the total drop. You can try to adjust the binding method, such as increasing or decreasing the number of laps and adjusting the binding position to make it stronger. Leggings are actually a pair of slender strips of cloth, which is a kind of leg protection measure for modern soldiers. Colors are generally matched with military uniforms, and their main function is to protect the legs, which can reduce the leg injuries of soldiers when marching.