This stainless steel tiffin lunch box with three compartments is made of high quality, food grade 304, 18-8 stainless steel. This kind of lunch box has been used for years and years in Asia to transport various types of food to school or to work.
Each compartment can be re-heated separately or used as a bowl. It works really well for carrying cut vegetables, nachos, nuts, as long as the contents are not too liquidy (best to keep them upright if carrying a liquid). The compartments are not watertight.