I'm selling this item because I haven't had a chance to use it. It can be used for a variety of purposes, including cooking in the microwave, oven, and water bath, freezing for storage, and as a pouch. There is a small stain on the back of the package. Please consider this item only if you understand that it has been stored by a private individual. Material: Silicone rubber Capacity: 473ml Heat resistance: 250°C Cold resistance: -18°C