Black Cat Fundoshi - Men's Cup Type - Adjustable String This single item can be worn in two ways: as a Black Cat Fundoshi or an open-back fundoshi. The Black Cat Fundoshi is a type of traditional Japanese fundoshi, and can be considered the original T-back underwear. T-back underwear has existed in Japan since ancient times. It is thought to have been devised based on the Rokushaku Fundoshi (six-shaku fundoshi) to make it easier to wear. The "Black Cat Fundoshi" is characterized by its easy wear, stability during vigorous movement, and minimal slippage, making it suitable for use as a sports supporter. Those unaccustomed to T-backs may find the fit around the buttocks a bit uncomfortable at first. For those concerned about the fit, the open-back of the YO-RO Modern Fundoshi is recommended. It is also recommended for those who are concerned about panty lines showing through their outer clothing. The string model uses stretchy T-shirt yarn for the string (mits) part, providing a feel similar to G-string underwear. You can choose between the string model for casual everyday wear or the bleached cotton string model for a tighter fit, depending on your needs. Body: Canvas fabric (slightly stiff) String: Stretchy T-shirt yarn Note: If you wish to change the fabric, please contact us with the fabric number when purchasing. (Note) * Made to order. * T-back set: Make a double knot at your preferred position, and use each string separately from the knot. * By using the open-back expansion kit, it can also be used as an open-back fundoshi. #fundoshi #fundoshi #Fundoshi #unisex #YO-RO #handmade #Japanese #lingerie #frontpad #loincloth #Etchu #YO-RO #YO-RO Farm