A bathtub is a vessel designed to hold water for the purpose of bathing, typically made from materials such as acrylic, porcelain-enameled steel, or cast iron. Historically, it has evolved from basic designs to contemporary forms, including Western-style reclining tubs and Eastern-style seated furo baths.
Writers have long associated the bathtub with symbols of relaxation, ceremony, or home life: Ezra Pound compared cooling passion to a "bathtub lined with white porcelain," while Mary Graham Bonner highlighted its role in childhood play. Julian Street observed the careful bathing customs in Japan, underscoring cultural differences. These diverse viewpoints illustrate the bathtub’s dual function as both a practical item and a medium for human experience, reflecting societal values and personal reflection across different times and places.