the core of a softball is surrounded by compressed air and nobody really knows how its made. (its made in a factory)
rubber
Generally made from leather.
leather
None. USC does not have a softball program.
Softball bats are normally made out of metal. Louisville slugger is the main company that makes softball bats. While they also make wood, metal is used in softball.
Softball gloves are made the same way Baseball gloves are. Companies like Akadema make both softball and baseball gloves. See video below on how gloves are made. http://www.YouTube.com/watch?v=KcGiBodC-Mo
a softbal is not easy to throw- you probably are not throwing a real softball.
Composite
A softball is made of leather on top and yarn or string to hold the two pieces of leather together. Inside is compresed foam or urithane foam.
Softball and Beach Volleyball.
I think it was George Hancock