M001 Product Overview: This is a reusable silicone bag. It can be heated in a microwave or hot water! It's a convenient item for storing at room temperature, in the refrigerator, or in the freezer. The wide bottom makes it easy to stack and cook meat and vegetables. Material: Silicone rubber Size: 23 x 12 x 19 cm (when the zipper is closed) Capacity: Approximately 1.8L Heat resistance: Approximately 200°C Cold resistance: Approximately -30°C Although unused, it has been stored at home. Please understand this before purchasing.