The sandwich heater from Proof is made of stainless steel. It also contains a heat-insulating handle and a lock for greater safety. It also contains an indicator that activates when the heater is ready for use. There is a button to control the temperature to ensure the quality of the food. It is also coated with Tefal non-stick material to make it easier. In use and cleaning, its size helps you save a lot of time and effort