A double-walled kettle has an outer and inner wall separated by an air layer or insulating material. This construction ensures that the surface of the kettle stays cool to the touch, providing safety benefits and preventing scorching. The double shell also contributes to better thermal insulation, meaning the kettle will maintain the water temperature for longer without consuming additional energy. This is advantageous for users who want to keep their water warm for longer periods of time without the need for reheating.