Eboshi

The eboshi is a tall cap of lacquered paper or silk stretched over a stiffened frame, worn by Shinto priests at rites and festivals in combination with the kariginu or other vestments. Like most of the Shinto priestly wardrobe it began as ordinary Heian court headwear rather than as purpose built ritual dress: adult men of the aristocracy and, later, of the samurai class wore some form of eboshi as a basic mark of having come of age and taken adult status, in styles that ranged from soft folded caps to the tall lacquered shape now associated specifically with shrine use. As secular fashion moved on, the shrine priesthood retained the older courtly headwear much as it retained the kariginu and joe robes, so that what looks distinctively religious today is substantially a preserved fragment of everyday medieval Japanese dress.

Breen and Teeuwen's history of Shinto situates this pattern of retention within the broader story of how the modern priesthood's visual identity was assembled from surviving court practice rather than freshly invented. Surviving portraits and illustrated scrolls from the Heian and later periods give scholars much of what is known about how eboshi were actually worn day to day, since the caps themselves, made of comparatively fragile lacquered paper, rarely survive from the earliest period in usable condition.

As with the kariginu it is worn alongside, the eboshi's exact form varies with the wearer's standing, and historically Japan had a wide vocabulary of eboshi styles distinguishing courtiers, warriors and commoners by the height, stiffness and tilt of the cap. In shrine use today the style is narrowed to the priestly forms, but the underlying principle survives, that headwear announces status before a word is spoken. The cap is fitted over hair dressed or bound in the traditional manner and secured so it holds its shape through the movements of a rite, which is part of why lacquer is used to stiffen the paper or silk rather than leaving it soft.

The Encyclopedia of Shinto describes the eboshi as one of a small set of vestment items whose form was essentially frozen once it passed into ritual use, continuing to be made in a shape secular Japanese fashion abandoned centuries ago, which is a common fate for garments that migrate from everyday wear into liturgical use across many traditions, not only this one. A priest typically keeps more than one eboshi, since the stiffened shape can be damaged by rain or rough handling, and a shrine's own equipment list commonly includes spares for use during outdoor festival processions.