What is an Eboshi hat?

An Eboshi hat is a type of headdress worn by Shinto priests (shinshoku) during ritual ceremonies. Originally, this type of hat was worn by  men who had passed their “coming of age” ceremony (genpuku). From the late Heian era, Eboshi evolved into heavily lacquered and other various formalized types. Nowadays, it is rarely worn outside of ritual occasions.
There are three types of Shinto:
– “formal vestments” (seisō),
– “ritual vestments” (reisō),
– and “ordinary vestments” (jōsō).
The Eboshi hat belongs to the “ordinary vestments” category and is worn by male priests together with robes called kariginu and jōe.