Plicata

Plicata the "folded" chasuble worn on Good Friday by the deacon and subdeacon, or by a priest, folded on the shoulder, when acting as a deacon. It is a relic of ancient usage, anterior to the use of the dalmatic and tunic, when they wore the trabea rolled up in front to leave their hands free and unencumbered, and is also a peculiarity belonging to times of penance.