ఫుట్‌బాల్‌లో ఎంత  గాలి ఒత్తిడి ఉండాలి?
Law 2 of the game specifies that the ball is an air-filled sphere with a circumference of , a weight of , inflated to a pressure of 0.6 to 1.1 atmospheres () "at sea level", and covered in leather or "other suitable material". The weight specified for a ball is the dry weight, as older balls often became significantly heavier in the course of a match played in wet weather. There are a number of different types of football balls depending on the match and turf including: training footballs, match footballs, professional match footballs, beach footballs, street footballs, indoor footballs, turf balls, futsal footballs and mini/skills footballs.
0.6 to 1.1 atmospheres