How does a tea cozy keep a teapot warm?

A tea cozy is designed to insulate a teapot, trapping heat and preventing it from escaping. Made from materials like fabric and batting, it creates a barrier that retains the warmth of the tea inside the pot. By minimizing heat loss through conduction, convection, and radiation, a tea cozy allows the tea to stay warm for a longer period, enhancing the overall drinking experience.