Soccer balls were made out of pig bladders back then.
Soccer balls are not made of a single element.
about a month after soccer balls were made
ANSWER made out of rubber and sometimes leather....Chinese made soccer balls
There were no soccer balls in ancient times.
As I know the Bundesliga and Championsleague's balls are made in Pakistan!
balls such as soccer ones are harder because they are made of different materials such as ruber balls or many other materials
There is no specific collective noun for soccer balls, in which case a noun suitable for the situation is used; for example a sack of soccer balls, a bin of soccer balls, a rack of soccer balls, etc.