The ball has a spherical shape used for soccer practice. It must be made of leather or other suitable material. Its circumference will be between 68 and 70 cm, its mass between 410 and 450 g, and its pressure between 0.6 and 1.1 atm at sea level.

It is important to have an adecuate ball in order to perform a successful football match, because the ball is the principal tool to play it, for that reason is mandatory to keep it in a good way according to rules of game.

In addition, if the ball does not keep the correct characteristics, the players can not use it, because it can affect them at the moment of kicking the ball in the game or they could also suffer an injury due to the bad state of the ball.