
Theferraiolo (alsoferraiuolo,ferraiolone) is a type ofcape traditionally worn byclergy in theCatholic Church on formal, non-liturgical occasions.[1] It can be worn over the shoulders, or behind them, extends in length to the ankles, is tied in a bow by narrow strips of cloth at the front, and does not have any 'trim' or piping on it.
The ferraiolo originated as a knee-length item of clothing for Roman nobility. It became a church garment in the 15th century when colours were associated with ranks in the church hierarchy.[1]
The colour of the ferraiolo is determined by the rank of the cleric, being black for secular priests, violet forprotonotaries apostolic andbishops, and scarlet forcardinals.[2]
Before 1969, members ofreligious orders could use a ferraiolo that matched the color of their habit. The colors also changed duringsede vacante.[1]
Cardinals, and patriarchs who are not cardinals, use a ferraiolo ofwatered silk. Archbishops, bishops and protonotaries may use silk but not watered silk, unless specifically permitted.[1] Lesser prelates may usefaille but should use wool and wear the ferraiolo behind the shoulders.[1]

Pope Paul VI encouraged wearing the ferraiolo at formal, non-liturgical occasions.[1]
ThePope may use a cape but does not wear a ferraiolo.[1]