Commission from https://x.com/hyperlewdcomodo

The electrification of Hearth-Under-Stone and other major settlements of the Underground Kingdom allowed for advancement in every area of life, including active cooling within their walls, automated defenses, and advanced manufacturing processes. As such, the protective ichcahupilli was replaced with a more comfort-focused singlet, with an apron over-top to protect against dangerous worked materials or messes.

Various slings, bags, belts, and other item-carrying methods coalesced into a webbing harness that could be adjusted for the comfort of the wearer. Once adjusted, the wearer could easily mount whatever items were needed for the moment in the form of boxes, bags, or even simple tool loops.

While neither capes nor hat changed overmuch, their popularity caught on far outside of Hearth-Under-Stone leading to changes in decoration and details changing from person to person and tailor to tailor, more than simple dye jobs