Among them, rubber soles are the most widely used for soles of various sports shoes. Its advantages are good wear resistance, anti-slip, elasticity, not easy to break, good flexibility, good ductility, stable shrinkage, good hardness and flexibility, but its disadvantage is heavy weight.

The structure of the sole is quite complex, which can broadly include all the materials that make up the sole, such as outsole, midsole, midsole, heel and so on. In a narrow sense, it only refers to the outsole. There are many kinds of sole materials, such as rubber soles, TPU soles, polyurethane soles, PVC soles and leather soles.