The stroller, also known as a Stresemann, a director, or simply black lounge is a form of men's semi-formal daytime dress comprising a single- or double-breasted coat (grey or black), grey striped or checked formal trousers, a necktie (grey or silver), and a waistcoat (dove grey, funeral black, or buff). This makes it largely identical to the formal morning dress from which it is derived, with the exchange of a suit jacket for a morning coat, and the almost exclusive use of a necktie and turndown collar. The correct hat is a bowler, boater hat or Homburg.