Chapter 84:6-7
Laws of Carrying: Clothing & Jewelry
6. A person who is shackled in chains may go out [to the public domain on
Shabbos] while wearing them (1).
7. It is forbidden to go out wearing stilts that are used for walking
through mud and water (2).
FOOTNOTES:
(1) The chains are considered an extension of one's body, and thus are
equivalent to clothing. Furthermore, one can assume that the chains have
been put on tightly, and there is thus no concern that they will fall off
in the public domain, and end up being carried (Mishna Berura 301:19).
(2) Stilts are not considered "regular" footwear ("Derech Malbush"), and
therefore are not the equivalent of clothing; wearing a mask in the public
domain would also be forbidden for the same reason (Mishna Berura 301:20)