The Le Creuset enamel on steel Classic Whistling Kettle is crafted from fast-heating premium carbon steel and finished with a colorful enamel in color Marseille carbon steel heats water rapidly, and a fixed single-tone whistle alerts when the water has reached a rolling boil. Chip-resistant, non-reactive, resistant to stains, and easy to clean, Le Creuset kettle compliments kitchen with a pop of color