100% AUTHENTIC ADIDAS OFFICIAL WORLD CUP 1978 TANGO RIVER PLATE ARGENTINA WORLD CUP BALL SIZE 5. Who’s the greatest soccer team on the planet? Every four years it is decided using a match specifically designed by adidas. This is a set of one each of the last 11 World Cup competitions. Each size 5 ball was re-constructed by adidas just as the original was made – with the exact design, same materials and manufacturing technique. Ball holds 100% air!!