derby 
Headgear primarily for men that appeared at the end of the 19th century; it is made of stiff felt with a circular rounded crown and an upturned narrow brim.
boater 
Stiff straw headgear with a flat brim of uniform width and an oval crown circled with a ribbon; it was worn at the end of the 19th century.
felt hat 
Soft hat with a dented crown that is adorned with a wide ribbon; it is made from a single piece and has a brim of uniform width.