The Frock Coat is generally a long coat that is mostly suitable for cold winters.

The early variations of frock coats were simply known as just “Frocks”.

Frocks were worn by both men and women, mostly as overcoats. Around the 16th century, frocks were associated mostly with women’s dresses (usually gowns). For men, frocks somewhat derived from banyans and were used as overcoats to contrast or blend in with the fancy frilly suits they were wearing. The buttons made it so that the coats stayed fastened like it should if it was necessary.

Around the 19th century is the time the frocks were becoming known best as “frock coats”. They evolved into the great trench coats we know best.

The frock coats had lapels we know today, including notch lapels, and peaked lapels, though it was mostly notch lapels. The peaked lapel was not most prominent until at least the 1910s, which are most likely to be seen in tuxedos, which were also popularized in the late Victorian era.

Around the 1880s is when the popularity of the frock coat began to diminish. The last time frock coats were seen was in 1919 when government officials were present for the Treaty of Versailles.

Frock coats can be found throughout Amazon, Etsy, and Historical Emporium. Check out results in the links below.

https://www.etsy.com/search?q=Frock%20Coat

https://www.amazon.com/s?k=Frock+Coat&i=fashion&ref=nb_sb_noss_2

https://www.historicalemporium.com/search/?q=frock+coat

This link leads to a pamphlet that is also good for the explanation of frock coats.