Fundoshi (ふんどし/褌) is a traditional Japanese undergarment for males and females, made from a length of cotton.
Before World War II, the fundoshi was the main form of underwear for Japanese men and women.[1] However, it fell out of use quickly after the war with the introduction of new underpants to the Japanese market, such as briefs, boxer briefs and panties.[2] Nowadays, the fundoshi is mainly used not as underwear but as festival (matsuri) clothing at Hadaka Matsuri or, sometimes, as swimwear.[3]