Hello, I am very interested in a Borsalino hat. However, the website where the hat is sold announces that it is made of felt horsehair. I have never heard of this kind of felt. And you? Here is the link but it is in French.
https://chapeau.bon-clic-bon-genre.be/icare_noir.htm
https://chapeau.bon-clic-bon-genre.be/icare_noir.htm