According to official regulations a soccer ball is "an air filled sphere with a circumference of 68-70 cm (27-28 in) and a weight of 410-450 g (14-16 oz). inflated to a pressure of 0.6-1.1 atmosphere at sea level (8.5 lbs/sq in)". This standard ball size is called size 5, although there are smaller sizes. Size three is the standard for team handball and size 4 in futsal and other small-field game types.
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