This my steampunk mad hatter top hat
Top hats can also be known as Beaver hats, High hats, Cylinder hats, Chimney Pot hats or Stove pipe hats, however I would definitely call this one a TOP hat
Its got a leathery oily feel to the fabric, size 59 which is bit big (by 1 size) for my head, lucky for me my ears keep it up well.
I think this hat will need a slightly insane character in my larp adventures to wear it.
Hard Hats = Hats stiffened in some way so they are no longer bend, this may be through steaming, pressing or adding a rigid material.