The term "shitagasane" refers to an inner robe which is put on between ho (outer robe/vestment) and hanpi (sleeveless body wear) when wearers put on a sokutai (traditional ceremonial court dress) or an ikan shozoku (traditional formal court dress).
下襲（したがさね）とは、束帯及び衣冠装束のとき袍と半臂の間に着る衣服。