I haven't even opened the package since I bought it. This is a foldable sandwich case made of polypropylene. It's approximately 19 x 10.5 x 7cm in size and made in Japan. - Product Name: Sandwich Case - Size: Approx. 19 x 10.5 x 7cm - Material: Polypropylene - Country of Manufacture: Japan - Foldable: Yes Thank you for looking.