2. At the same time It is to install the leg guards, but also to make a long tube;
3. Wear ball socks to tighten the muscles of the legs and make the force more concentrated;
4. The colors of the socks of the players on the two teams are generally different, so the players can more easily distinguish between opponents and friends in a melee;
5. It is convenient for the referee to distinguish the legs of the two players and improve the accuracy of the judgment.