Rokushaku fundoshi is Japanese male underwear composed of sarashi (bleached cloth) which is approximately 180-300 cm long and 16-34 cm wide.
六尺褌（ろくしゃくふんどし）とは、長さ約180cm～300cm程度、幅約16cm～34cm程度のさらしの布を用いた日本人男性用の下着。