Offline Players Feature

In Edit Mode, Player Career and all other offline modes add the option for "Long Undershorts" in the "Kit" category.
It's a part of equipment which is used in Football, just like the other Kit fit types this is one of them but for legs. This is the same as the undershirt for the torso but there is no legs category to have long undershorts.
As you can probably tell there are many purposes for someone to want to use these, in player career and edit mode.

You could add a toggle between long/short also.

They Already exist in the game: