Cappello Romano, Cappello Romano

It is made of either beaver fur or felt, and lined in white silk. Unlike many other articles of ecclesiastical attire, it serves no ceremonial purpose, being primarily a practical item. (The galero is a ceremonial wide brim hat no longer worn.) The cappello romano is not used in liturgical services. Since the general abandonment of the cassock as street dress, it is uncommon even in Rome today, though it was quite popular there and in some other countries with a Catholic majority population from the 17th century until around 1970.

Source: Wikipedia > Cappello Romano