The fanon (old Germanic for cloth) is a vestment reserved only for the Pope for use during a pontifical Mass.

It consists of a doubled shoulder-cape (somewhat like a mozzetta) of white silk ornamented with narrow woven golden stripes, so that the colors alternate white and gold. The first layer of the fanon is placed under the stole and the second over the chasuble, under the white pallium. The two pieces of the fanon are nearly circular in shape but somewhat unequal in size and the smaller is laid over and fastened to the larger one. To allow the head to pass through there is a round opening in the middle with a vertical slit running down farther. The front part of the fanon is ornamented with a small cross embroidered in gold.

The fanon is similar to an amice; it is, however, put on not under the alb, but above it. The pope wears it only when celebrating a solemn Pontifical Mass, that is, only when all the pontifical vestments are used. The manner of putting on the fanon recalls the method of assuming the amice universal in the Middle Ages and still observed by some of the older religious orders. After the deacon has vested the pope with the usual amice, alb, the cingulum and sub-cinctorium, and the pectoral cross, he places the fanon on the pope by means of the opening, and then folds half of the upper piece towards the back over the pope's head. Then he vests the pope with the stole, tunicle, dalmatic, and chasuble, after which he turns down that part of the fanon which had been placed over the head of the pope, draws the front half of the upper piece above the chasuble, and finally arranges the whole upper piece of the fanon so that it covers the shoulders of the pope like a collar. The pallium is placed over the fanon.

Blessed Pope John XXIII (Latin: Ioannes PP. XXIII; Italian: Giovanni XXIII), born Angelo Giuseppe Roncalli (25 November 1881 – 3 June 1963), headed the Catholic Church and ruled Vatican City from 1958 until his death.

Pope John was elected on 28 October 1958. He called the Second Vatican Council (1962–1965) but did not live to see it to completion. He died in 1963, only four-and-a-half years after his election, and two months after the completion of his final encyclical, Pacem in Terris. He was beatified, along with Pope Pius IX, on 3 September 2000.

Angelo Giuseppe Roncalli was born in Sotto il Monte, a small country village in the Bergamo province of the Lombardy region of Italy. He was the first-born son of Giovanni Battista Roncalli (1854–1935) and his wife Marianna Giulia Mazzolla (1854–1939), and fourth in a family of 13, including: Angelo Giuseppe, Alfredo (1889–??), Maria Caterina (1877–1883), Teresa (1879–1954), Ancilla (1880–1953), Domenico Giuseppe (22 February 1888 – 14 March 1888), Francesco Zaverio (1883–1976), Maria Elisa (1884–1955), Assunta Casilda (1886–??), Giovanni Francesco (1891–1956), Enrica (1893–1918), Giuseppe Luigi (1894–??) and Luigi (1896–1898). His family worked as sharecroppers as did most of the people of Sotto il Monte – a striking contrast to that of his predecessor, Eugenio Pacelli (Pope Pius XII), who came from an ancient aristocratic family, long connected to the Papacy. However, he was still a descendant of an Italian noble family, from a secondary and impoverished branch.

Blessed Pope John Paul II (Latin: Ioannes Paulus PP. II, Italian: Giovanni Paolo II, Polish: Jan Paweł II), born Karol Józef Wojtyła (Polish: [ˈkarɔl ˈjuzɛf vɔjˈtɨwa]; 18 May 1920, Wadowice, Republic of Poland – 2 April 2005, Apostolic Palace, Vatican City), reigned as Pope of the Catholic Church from 1978 until his death in 2005. He was the second-longest serving Pope in history and the first non-Italian since 1523.

John Paul II was acclaimed as one of the most influential leaders of the 20th century. He was instrumental in ending communism in his native Poland and eventually all of Europe. John Paul II significantly improved the Catholic Church's relations with Judaism, Islam, the Eastern Orthodox Church, and the Anglican Communion. Though criticised by progressives for upholding the Church's teachings against artificial contraception and the ordination of women, and by traditionalists for his support of the Church's Second Vatican Council and its reform, he was also widely praised for his firm, orthodox Catholic stances.

Paul VI (Latin: Paulus PP. VI; Italian: Paolo VI), born Giovanni Battista Enrico Antonio Maria Montini (26 September 1897 – 6 August 1978), reigned as Pope of the Catholic Church from 21 June 1963 until his death on 6 August 1978. Succeeding Pope John XXIII, who had convened the Second Vatican Council, he decided to continue it. He fostered improved ecumenical relations with Orthodox and Protestants, which resulted in many historic meetings and agreements.

Montini served in the Vatican's Secretariat of State from 1922 to 1954. While in the Secretariat of State, Montini and Domenico Tardini were considered as the closest and most influential co-workers of Pope Pius XII, who named him in 1954 Archbishop of Milan, the largest Italian diocese, yet denying him the Cardinal designation that traditionally accompanies being Archbishop of Milan, a function which made him automatically Secretary of the Italian Bishops Conference. John XXIII elevated him to the College of Cardinals in 1958, and after the death of John XXIII, Montini was considered one of his most likely successors.