A strap worn across the forehead, such as a sweatband, a strip of cloth worn during martial arts or athletic events, or a piece of ninja armor (however apocryphal). While a headband may be used to keep hair out of the eyes, it is usually worn under at least part of the hair. Headbands often end with a long tail trailing behind the head where they are tied.
For a band worn over the top of the head, that is principally used to maintain a hair style, see hairband.
