My Neighbor Totoro March Cafe Donburi Insulated Lunch Jar 540ml [Specifications] Size: Approximately φ115 x H140mm Total Capacity: 540ml (Inner container: 220ml) Heat Retention: 52 degrees Celsius or higher (6 hours) Weight: 328g Materials: Stainless steel (body), Polypropylene (lid, inner container, inner lid), Silicone rubber (packing), Thermoplastic elastomer (bottom plate) Antibacterial processing