A Tail Set is the tail worn by a Human Pony. Tails may be attached by belts, harnesses, plugs or other anchors, and vary from ornamental horsehair pieces to elaborate constructions. Tail Sets are a defining element of Pony aesthetic and often a valued personal item.

Tail Sets emerged as a signature Pony Play accessory alongside the wider development of dedicated gear traditions.

Attachment methods and comfort vary. Communities generally advise choosing what is safe and sustainable for the individual body.