Made of food-grade material, high-temperature resistant, safe, odorless and non-toxic. Inner is designed with separated container(1.5L large capacity), easy to remove and clean. With dual-function for heating and warm keeping. Easy to use, no need for a microwave oven, all you need is to connect it to the Power-supply for direct heating. The design of recycle heating in Low-Power can keep the food warm and fresh.