Happi

Happi (法被, 半被) is a traditional Japanese straight-sleeved coat usually made of indigo or brown cotton and imprinted with a distinctive mon (crest). They are usually worn only to festivals. Originally, these represented the crest of a family, as happi were worn by house servants. Later, the coats commonly began to display the crests of shop...
Found on http://en.wikipedia.org/wiki/Happi

Happi

Haori are often mistakenly called happi coats because they have similar construction, but happi are distinctly different. They are never made of silk (usually cotton) and are not meant as kimono outerwear. Traditionally, happi are worn as work jackets or at festivals or company events to identify the wearer with a group of participants. Typically a...
Found on http://www.wafuku.co.uk/glossary.htm
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