[Skahtboi]

The only thing in the 2004 Dixie Rule book concerning helmets:

2:06 — The batter’s helmet shall be made of Ultra High Impact Plastic or High Impact Plastic Shell. The shell shall be of one-piece construction or two pieces if they snap into a single unit similar to the one-piece construction type. The helmet shall have pieces for ears and full protection for the head and temple. The padding shall be of heavy rubber or similar material. The use of the web-type suspension inside the helmet is not recommended. It is recommended that all future replacements of present stocks be of the padded type. All batting helmets worn in Dixie Softball play MUST be the style made with chin strap snaps and chin straps MUST be properly worn at all times that a player is required a batting helmet. (The penalty for a player not wearing the chin strap shall be after one (1) warning in a game she shall be called out for each subsequent time she comes to bat or runs the bases with an illegal helmet.) A player shall not remove her helmet while at bat or while running the bases. The helmet shall be worn by any offensive player while on the playing field, such as the bat girl, on-deck batter, batter, baserunner or base coach.
Penalty for removal of the helmet while on the playing field shall be that for a first offense the player shall be warned by the umpire; for second and subsequent offenses in the same game, she shall be called out. If the violation is by a bat girl, on-deck batter or base coach the penalty for their second (2nd) offense is removal from the game and from the field.
NOTE: Each batter and each baserunner must wear a batter’s helmet and each catcher must wear a catcher’s helmet which meets the above requirements. Batter’s helmets only, must bear the NOCSAE seal of approval. Catcher’s helmets are not required to bear this seal. The helmet must fit with a snug fit to the head and must be worn as intended by the manufacturer. No other hat or cap may be worn underneath the helmet.
NOTE: Helmets shall not be worn in an improper manner, such as on the back of the head, etc., and if a player’s hairstyle causes the helmet to fit improperly then the player should change her hairstyle so that the helmet will fit properly.
2:07 — A face guard attached to the batting helmet is required for play in all age divisions for all batters, baserunners, on-deck batters, bat girls and players and/or youth serving as a base coach. The face guard becomes a permanent part of the helmet in regards to all rules. The wearing of a helmet is optional for adult coaches. Approved facial protective devices must provide full coverage which will include, but not be limited to, protection for the eyes, nose, mouth and teeth, jaws and cheek bones and forehead and temple areas.

This could, of course, be a league only rule. But I am not sure what the point would be if DSI fails to address it.