Football has changed greatly from the first World Cup in 1930. Players are fitter than ever before, football gear has changed from baggy shorts to tight fitting jerseys, rules have changed to suit the attacking team, and believe it or not the roundness of the simple football has become something of a science all in itself.
The balls that were used in the 1930s are very much different from what we are used to now, literally made from a pig's bladder, they are now put together with the science and preciseness of space age technology.
Here is a brief history of the development of the one device that the game cannot exist without.