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Outdoors Circumference: Size 5 Approved 68.5 - 69.5 cm, Size 5 Inspected 68.0 - 70.0 cm, Size 4 Inspected 63.5 - 66.0 cm at ball pressure: 0.8 bar
Indoor Circumference: Approved 62.5 - 63.5 cm, Inspected 62.0 - 64.0 cm at ball pressure: 0.6 bar
Tests are conducted at room temperature (approx. 20°C) and 65% humidity.
The three standards are FIFA Approved, the FIFA Inspected or the International Matchball Standard (technically equal to FIFA Inspected but royalty free). FIFA calls them footballs BTW.
Source(s):
http://www.soccerballworld.com/FIFA_tests.htm
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| May 11, 2009 09:31 PM | view on twitter |
Indoor Circumference: Approved 62.5 - 63.5 cm, Inspected 62.0 - 64.0 cm at ball pressure: 0.6 bar
Tests are conducted at room temperature (approx. 20°C) and 65% humidity.
The three standards are FIFA Approved, the FIFA Inspected or the International Matchball Standard (technically equal to FIFA Inspected but royalty free). FIFA calls them footballs BTW.
Source(s):
http://www.soccerballworld.com/FIFA_tests.htm
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