Oshita no naogi - Pigtailed cow

…For both children and adults, the summer texture is kome (rice), and the pattern is a small triple sash for children and a triple sash for adults. From the end of the Heian period onwards, in addition to the normal naoshi, the emperor wore ohiki naoshi or osage naoshi, which were slightly longer in length and not tucked in, with the hem hanging down and pulled back. On this occasion, the emperor wore long nagano onuchiginu and long nagano hitoe, and red nagabakama instead of sashinuki. …

*Some of the terminology explanations that refer to "Oshita Naoshi" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…幼年，壮年ともに夏の地質は縠（こめ），文様は，幼年が小型の三重襷（みえだすき），壮年が三重襷である。平安末以後，天皇は通常の直衣のほか，御引（おひき）直衣または御下（おさげ）直衣と称し，身丈をやや長く仕立てたものを搔込みをせず，裾をそのまま垂らして後方に引く形式のものを着用した。この際は長御打衣（ながのおんうちぎぬ），長御単を着て，指貫の代りに紅の御長袴をはく。…

※「御下直衣」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報