Khrui

The khrui (Thai: ครุย, pronounced [kʰrūi]) is a light outer garment worn as a gown or robe in certain ceremonial settings in Thailand.

It is long-sleeved and open at the front, and is made of a sheer or mesh fabric, lined with a band of satin, felt or other material, and may be exquisitely embroidered.

Use of the khrui continued into the Rattanakosin period, as evidenced by mention in the 1804 Law of Three Seals prohibiting its use by junior government officials.

When used in ceremonial settings by senior government officials or royalty, the gown may be embroidered with certain patterns of goldwork depending on the rank of the wearer.

[7] Its use by nak[b]—novices preparing to undergo upasampada (Buddhist ordination)—is the only occasion where the khrui is worn regardless of a person's social rank.

King Vajiravudh wearing the khrui of a barrister-at-law
A graduate of Chulalongkorn University wearing the khrui as the university's academic gown