One of the four pillars of Sikh Dharma: Bana, Bani, Seva, Simran. Bana is the projection of a Sikh through the way one dresses. It often refers to the dress of Guru Gobind Singh: kurta, kachera, and turban. Students of Yogi Bhajan, both men and women wear the turban.
KWTC – Lecture
Defines Bana as a kind of uniform; an identity that one qualifies oneself through. Read the original article here: http://www.libraryofteachings.com/lecture.xqy?id=09c5c946-16c1-425b-29af-9b03c85ce549&title=KWTC—Lecture