Because Ecchu fundoshi on the market have a tag, which shows the brand of the maker, attached to the waist string part, the purchasers of Ecchu fundoshi on the market are supposed not to mistake the front and back sides of Ecchu fundoshi, unlike the users of the home-sewed Ecchu fundoshi (The front of Ecchu fundoshi is the side on which the turn-ups around the edge of the maedare are inside.)
市販の越中褌には各社のブランドのタグが腰紐部分取付けられているので、市販の越中褌の購入者は自家製の越中褌の利用者と比べて越中褌の表裏を間違えないような仕組みになっている（越中褌は前垂れの端の折り返しが内側にあるものが表となる）。