The Official Volleyball Ball
The ball shall be spherical, made of a flexible leather or synthetic leather case with a bladder inside, made of rubber or a similar material.
Volleyball ball color
Its colour may be a uniform light colour or a combination of colours.
Synthetic leather material and colour combinations of balls used in international official competitions should comply with FIVB standards.
Volleyball Ball Circumference and Weight
Its circumference is 65-67 cm and its weight is 260-280 g.
Internal Pressure of the Volleyball Ball
Its inside pressure shall be 0.30 to 0.325 kg/cm 2 (4.26 to 4.61 psi) (294.3 to 318.82 mbar or hPa).
Uniformity of Volleyball Balls
All Volleyball balls used in a match must have the same standards regarding circumference, weight, pressure, type, colour, etc.
FIVB, World and Official Competitions, as well as National or League Championships, must be played with FIVB approved balls, unless by agreement of FIVB.
Ball Retrieval Sysrem
For FIVB, World and Official Competitions, five balls shall be used. In this case, six ball retrievers are stationed, one at each corner of the free zone and one behind each referee.
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