A scapular is a sacramental that looks like two small pieces of wool cloth connected by string that is worn over the neck, typically under the clothing, such that one piece of cloth hangs over the chest, and the second piece of cloth hangs over the back (and, like many things, occasionally creeps unexpectedly into view). They derive from the scapulars which make up part of monastics' religious habits -- that ankle-length (front and back), shoulder-wide, apron-like part of the habit that basically consists of a long rectangular piece of material with a hole for the head (some of them have hoods and some had ties under the arms). Monastic scapulars came, over time, to be called jugum Christi (the yoke of Christ), and receiving the scapular (becoming "invested") took on solemn meaning. Abbreviated forms of the full monastic scapulars were to be worn even at night.Some scapulars have privileges and indulgences attached to wearing them, but like any sacramental (this is the important part), scapulars are not magic; their efficacy depends on the proper intentions and faith of the wearer. Only by following through on the promises one makes when becoming invested can the benefits associated with them be had. They are best thought of as signs of a commitment to do certain things and of one's being a part of a religious community. They act as reminders, too, of these things they signify and of the Saints who are parts of the religious community in question. They are reminders to behave with holiness.
