Most safety shoes had shoes, bed pads, is usually a fixed fit insoles. However, if insole covered the entire length of the sole, then no doubt it also extends to the shoes the protection space below the header. This reduces internal clearance in baotou, shoes, but shoes can provide a protective effect of adverse effects in baotou. Therefore, the toe part of the insole can be considered thin. Internal clearance is evaluated in baotou, once the shoe meets the requirements, do not change the insole.