A coat is an outer garment for the upper body, intended for warmth or style, usually including long sleeves and front closures. From the medieval cotte to contemporary trench coats, its development illustrates changes in social standing and utility. Writers such as Mrs. George de Horne Vaizey praised its refinement, describing a "snowy white" summer coat, while Eugène Leclerc ridiculed its exaggerated shape in Coward or Hero?.
G. P. R. James associated a "plain black coat" with refined elegance, emphasizing its function as a symbol of identity. Throughout history, the coat has acted as both practical clothing and an indicator of cultural subtleties, with its design and importance evolving alongside societal transformations.