This is a sandwich case with an Anpanman design. It can be folded compactly. I received it and kept it unopened at home. I opened it to check the contents for this listing. ● Size: Approximately 110mm x 135mm Thickness: Approximately 70mm (Approximately 15mm when stored) ● Heat resistance: 100 degrees Celsius, Cold resistance: -10 degrees Celsius ● Material: PP Thank you for your understanding. Please consider purchasing.