A homburg is a semi-formal hat of fur felt, characterized by a single dent running down the centre of the crown (called a "gutter crown"), a wide silk grosgrain hatband ribbon, a flat brim shaped in a "pencil curl", and a ribbon-bound trim about the edge of the brim. It is traditionally offered in black or grey. As with other hats, it largely fell out of everyday use of Western dress codes for men in the 1960s.