Equipment has varying sizes, making clothing/armor not fit all characters and/or tools being either ungainly large or too minuscule to those with significant size differences.
The first video game about Equipment size was released on August 21, 2001.
Julian Mensch has published all these games
* Character/class limited items, see class-based equipment instead.
* Gender differences in equipment are not part of this.
* Species differences also are not part of this (problem being notably different anatomy rather than size).
Generally not seen in games because it adds an extra layer to track, and is not often wanted by players because it makes some equipment unusable to them that might otherwise be very much wanted (especially true if the game uses item generator and obsoletes equipment).