This is an authentic batting helmet like the MLB Pros wore years ago This is not the S100 helmet which is currently used by the MLB. Put this in case and show it off in your Man-Cave, place it on your desk at work or put it on top of your TV for good luck while watching the game. Whatever your use it is a great way to show off your favorite team. This item is made by Rawlings. Note we sell these helmets as collectibles and they are not meant to be used for actual play that is why sizing is not listed.