A football is a ball inflated with air that is used to play one of the various sports known as football. In these games, with some exceptions, goals or points are scored only when the ball enters one of two designated goal … See more

In the United States and Canada, the term football usually refers to a ball made of cow hide leather, which is required in professional and collegiate football. Footballs used in See more

The football used in Australian football is similar to a rugby ball but generally slightly smaller and more rounded at the ends, but more elongated in … See more

Until 1870, rugby was played with a near spherical ball with an inner-tube made of a pig's bladder. In 1870 Richard Lindon and Bernardo Solano … See more

Law 2 of the game specifies that the ball is an air-filled sphere with a circumference of 68–70 cm (27–28 in), a weight of 410–450 g (14–16 oz), inflated to a pressure of 0.6 to 1.1 atmospheres (60–111 kPa or 8.7–16.1 psi) "at sea level", and covered in leather or "other … See more

The game is played with a round leather football made of 18 stitched leather panels, similar in appearance to a traditional volleyball (but larger), with a circumference of … See more

• List of inflatable manufactured goods See more