Meet the subject

Obi: the sash, its construction and the finished knot

An obi is a long textile sash worn around the waist with Japanese dress. Its effect depends on the sash’s width and construction, the way it is shaped into a knot, and any supporting accessories. Fukuro-obi names a kind of sash; otaiko names a way of arranging it.

Maru obi: patterned face and reverse

Sash types, knot forms and accessories describe different things.

Other ties used in dressing also help secure a kimono.

Wide and narrow forms serve different uses rather than one simple hierarchy.

01

Read the sash before the finished silhouette

Wrapping length and working ends

Once the sash is wrapped around the waist, its ends contribute to the knot; Japanese dressing terminology distinguishes their roles as te and tare. A sash laid flat reveals length and folded areas that a photograph of the finished back arrangement can conceal.

A common Nagoya obi construction, with the narrow section at left and broad section at right
Hand endPre-folded waistOtaiko sectionTail

Different ways of constructing a wide sash

Maru-obi fold a broad patterned textile so that both faces can carry decoration. Fukuro-obi commonly combine a patterned face with a plain backing. A Nagoya-obi usually has its waist section already folded to half width, while the part forming the otaiko remains wider. Construction changes material use and handling.

A decorative textile surface from The Met; this image does not show a complete sash or its construction.

Narrow and soft forms

Hanhaba-obi are narrower sashes used with lighter dress such as yukata. Kaku-obi have a firmer form and are a familiar choice in men’s dress. Heko-obi use softer fabric that produces a less rigid knot. Clothing, occasion and the wearer shape the selection.

Knot forms and supporting accessories

Otaiko forms a folded, box-like loop at the back with a short tail below. Bunko has wing-like folds spreading to either side. An obi pillow supports the arrangement; obiage covers the pillow, obijime holds the knot against loosening, and an obi board smooths the front. The accessories used depend on the arrangement.

Front waist
Back, otaiko example

Dark green: board at the front waist; pale pillow: support at the back; pink: scarf over the pillow; red line: securing cord. Placement schematic, not tying instructions.

An otaiko example: a shaped body with a short tail below. Sagami dressing photograph; date unknown.
A bunko example: two spreading wings held at the centre. Sagami dressing photograph; date unknown.
02

A more visible sash, then changing uses

The kosode made the sash more prominent

Kazuko Aoki’s study connects the sash’s development with the kosode becoming outer dress in the Muromachi period. Narrower forms continued through Momoyama and early Edo before increasing width and decoration. The Kyoto kimono-industry foundation also describes kabuki’s influence on wider sashes, back arrangements and patterns.

Waist sash in Beauty of the Kanbun Era, late seventeenth century

The Metropolitan Museum of Art

Part of an eighteenth-century obi, now unstitched; Kyoto National Museum

Kyoto National Museum / acquisition report, item 7

Two width records for one object

Finished width: 16.5 cmThe museum’s record for the original finished construction.
Opened width: 36.5 cmThe opened fabric width describes a different construction state.

These measurements belong to this eighteenth-century object, separate from the nineteenth-century and postwar examples.

Kyoto National Museum

A knot with a developing history

A familiar story connects otaiko with Kameido Bridge in 1817. Aoki’s study compares earlier images and texts with later terminology and identifies precedents. The form and its name developed over time, rather than being fully explained by that single story.

Sash and projecting rear knot in a Harunobu print, about 1765

The Metropolitan Museum of Art

Detail of the same print: folded, projecting and hanging portions

The Metropolitan Museum of Art

The print is an earlier visual witness for comparison with the modern rear view above; it does not establish an identical tying method.

Modern construction addressed material and handling

Taishō-period changes involving fukuro-obi and Nagoya-obi addressed fabric use, weight and ease of dressing. A pre-folded waist section reduced the need to fold that length while putting it on. Accessories helped create familiar modern shapes, while several sash types continued in use.

Nagoya obi made by Koshihara Haruko, as identified by Koshihara Gakuen; wide and narrow portions remain connected

Koshihara Gakuen

The school dates the development to around 1915 and commercialization under the Nagoya name to 1924. The illustrated object and photograph are individually undated.

Koshihara Gakuen

Special occasions gained a larger role

The Showa Memorial Museum describes postwar shortages followed by urban women’s increasing adoption of functional Western-style clothing, with a shift in relative use around 1955 in cities. Mito City Museum traces kimono’s changing emphasis from everyday wear towards festive occasions such as Shichigosan and coming-of-age celebrations. Obi use changed with these contexts without everyday wearing disappearing entirely.

Nagoya obi by Daihiko, dated 1955–1964; Tokyo National Museum

Tokyo National Museum / Cultural Heritage Online

Its dyed floral pattern is arranged for areas including the taiko. This is a particular postwar example of kimono dress.

Tokyo National Museum

Check your understanding

Are fukuro-obi and otaiko equivalent categories?

No. One describes the sash’s construction; the other describes a finished arrangement.

Is a Nagoya-obi narrow along its entire length?

Usually not. Its waist section is pre-folded, while the otaiko-forming section remains wider.

Is an obi-makura part of the woven sash?

It is a separate support used for particular arrangements.

Does every kimono wearer use an otaiko knot?

No. Sashes, knots and accessories vary with the clothing and its use.

Sources and images

A bunko example: two spreading wings held at the centre. Sagami dressing photograph; date unknown.
No open licence established from the source website.

A decorative textile surface from The Met; this image does not show a complete sash or its construction.
The Metropolitan Museum of Art, Open Access; public domain.

An otaiko example: a shaped body with a short tail below. Sagami dressing photograph; date unknown.
No open licence established from the source website.