They are the remnants of ceremonies conducted at the age of three, 'Kamioki (the ceremony of letting a child's hair grow)', at the year five, 'Hakamagi (ceremony fitting child with a hakama (Japanese skirt) for the first time)', and at the year of seven, 'Obitoki (the ceremony of fitting an ordinary obi to a child)' and 'Himootoshi (the ceremony of cutting cords to fit an ordinary obi for a child).'
3歳は髪を伸ばす「髪置（かみおき）」、5歳は初めて袴をつける「袴着（はかまぎ）」、7歳は、それまでの紐付きの着物に代わって、本仕立ての着物と丸帯という大人の装いをする「帯解（おびとき）・紐落（ひもおとし）」の名残りである。