5. We could say that the trend was always renewed each 4 years, with the introduction of a new World Cup soccer ball. It has been almost a tradition to have a new and improved soccer ball at each World Cup, each with its own characteristics.
For example, the World Cup soccer balls used in 2002 in Korea and Japan were lighter than those used as standard before and made out of a material that would be more controllable, favoring technically skilled players and thus, rising the entertainment value.
In 2006 at the Germany World Cup, a new soccer ball was introduced, which sparked the anger of many goalkeepers, including veteran Oliver Kahn.
