It can be guessed that Ecchu fundoshi were adopted as articles supplied at official expense because they were easier to put on and take off and they were economical for being made from less cloth than Rokushaku fundoshi.
越中褌は六尺褌と比較して着脱が容易で生地も少ない経済性が官給品として軍隊で採用されたものと推測される。