For example , youth softballs will not only be smaller , but typically use synthetic covers and a softer core to reduce the instance of injury from impact ; .
NFHS softballs will use leather covers and a harder core to mimic professional and collegiate softballs .
For example , youth softballs will not only be smaller , but typically use synthetic covers and a softer core to reduce the instance of injury from impact ; whereas NFHS softballs will use leather covers and a harder core to mimic professional and collegiate softballs .