Vestment sets are liturgical garments in matching colors and designs. Churches often purchase or make vestments and altar vestures in groups so that all of the textiles will match. A set, at minimum, will consist of a stole and chasuble (and, pre-Vatican II, maniple), or of a burse and a chalice veil. Sets will be a single liturgical color. Some churches will also obtain the same textile in each of the liturgical colors, in order to maintain a consistent visual image throughout the church year.

Sources:

Braun, Joseph. "Vestments." In The Catholic Encyclopedia. Robert Appleton Company, 1912. http://www.newadvent.org/cathen/15388a.htm.

Collinge, William J. Historical Dictionary of Catholicism. 3rd ed. Rowman & Littlefield, 2021.

The History of Liturgical Vestments in the Catholic Church. The San Felipe de Neri Parish Museum, 2022. https://sanfelipedeneri.org/documents/2022/1/The%20History%20of%20Liturgical%20Vestments%20in%20the%20Catholic%20Church-1.pdf.

"Pontifical vestments," Wikipedia, December 5, 2023. https://en.wikipedia.org/wiki/Pontifical_vestments.

"Vestment," Wikipedia, September 18, 2024. https://en.wikipedia.org/wiki/Vestment.