Law 2 - The Ball Qualities and Measurements The ball is:    spherical made of leather or other suitable material of a circumference of not more than 70cm (28ins) and not less than 68cm (27ins) not more than 450g (16oz) in weight and not less than 410g(14oz) at the start of the match of a pressure equal to 0.6 - 1.1 atmosphere (600 - 1100g/cm2) above atmospheric pressure at sea level (8.5lbs./sq.in to 15.6lbs/sq.in) Replacement of a Defective Ball If the ball bursts or becomes defective during the course of a match: the match is stopped it is restarted by dropping the replacement ball at the place where the first ball became defective* If the ball bursts or becomes defective whilst not in play at a kick off, goal kick, corner kick, free kick, penalty kick or throw-in: the match is restarted accordingly The ball may not be changed during the match without the authority of the referee. Decisions of the International F.A. Board Decision 1 In competition matches, only footballs which meet with the minimum technical requirements stipulated in Law 2 are permitted for use. In FIFA competition matches and in competition matches organised under the auspices of the confederations, acceptance of a football for use is conditional upon the football bearing one of the following three designations: the official "FIFA APPROVED" logo, or the official "FIFA INSPECTED" logo, or the reference "INTERNATIONAL MATCHBALL STANDARD" Such a designation on a football indicates that is has been tested officially, and found to be in compliance with specific technical requirements, different for each category and additional to the minimum specifications stipulated in Laws 2. The list of the additional requirements specific to each of the respective categories must be approved by the International F.A. Board. The institutes conducting the tests are subject to the approval of FIFA. National association competitions may require the use of balls bearing any one of these three designations. In all other matches the ball used must satisfy the requirements of Law 2. Decision 2 In FIFA competition matches, and in competition matches organised under the auspices of the confederations and national associations, no kind of commercial advertising is permitted on the ball, except for the emblem of the competition, the competition organiser and the authorised trademark of the manufacturer.  The competition regulations may restrict the size and number of such markings.