It is made from high-quality 410 stainless steel that is heat, rust, corrosion, or discoloration resistant and sturdy to ensure it stands up to daily use. It has a capacity of 3.17QT per food tray, which can hold a lot of food and can meet the needs of many people at once. It keeps food at the right temperature for a long time. All you need to do is add the right amount of water to the water tray and ignite the fuel to heat and keep the food evenly, or add ice cubes to the water tray to cool down the food.