A fundoshi is a japanese version of a
loin cloth. Many people wear a fundoshi as
underwear. A fundoshi has a long cloth with straps at both ends (
think of a large "T") The straps are tied around the waste holding the cloth between the mid section of the body.
I was told that the fundoshi is very comfortable.
There is a Japense festival called the Fundoshi Run in Sapporro, Japan which is held in the winter.