The playing field must be of natural or artificial, although this may depend on the rules of the competition. The land must be rectangular, its length being between 90 and 120 m (100 and 110m for international matches), and their width between 45 and 90m (64 and 75m for international matches). The entire perimeter of the field lines will be surrounded by more than 12cm in width: the 2 longer have the name sidelines, while others will be the goal lines. On the field we draw a line parallel and equidistant to the finish line, which will be called midline. The midpoint of this line will be the center of a circle of radius equal to 9.15 m.
The ball is a ball or spherical object used to playing football. It must be leather or other suitable material. Its circumference is between 68 and 70cm, its mass of between 410 and 450g, and the pressure of between 0.6 and 1.1 atm at sea level.
If a ball is damaged during a game, only the referee may give the go ahead to replace it, if the balloon burst in the suit of any of the goals, the referee shall replace the ball and neutral from the boat whistle midfield.
For FIFA matches level, all balls must be at least one of the following three brands:
* The logo of FIFA APPROVED
* The logo of FIFA INSPECTED
* Reference MATCHBALL INTERNATIONAL STANDARD
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