Every Mason at a Lodge Meeting wears the distinctive badge, or Masonic Badge which is the apron, and it is only when he does so that he is properly clothed.
He may wear additional decorations such as collars or jewels indicating the special office which he holds or the degree he has taken, but unless the brother wears the apron he cannot be admitted to the Lodge.
The necessity for Masons being properly clothed brings with it interesting allegories and symbols.