In Christian monastic orders of the Catholic, Lutheran and Anglican Churches, the habit consists of a tunic covered by a scapular and cowl, with a hood for monks or friars and a veil for nuns; in apostolic orders it may be a distinctive form of cassock for men, or a distinctive habit and veil for women. Catholic Canon Law requires only that the garb of their members be in some way identifiable so that the person may serve as a witness of the Evangelical counsels.