Key FeaturesInsulation: They use a double-layer hollow design with a 304 stainless steel interior and a plastic exterior to keep food at the desired temperature for several hours.Portability: The set often includes a matching cylindrical insulated carrying bag with a handle and an adorable panda motif.Versatility: Suitable for carrying a variety of foods including soups, noodles, and snacks for school, the office, or picnics.Capacities: Individual containers are typically available in sizes around 420ml and 620ml