It can be frozen or lentined! Luque's "Reusable Silicone Box" that can be used repeatedly. It can also be reheated in the microwave directly out of the refrigerator or freezer. It is also recommended for freezing ingredients and rice! Since it can be stacked, it does not take up space in the refrigerator and can be stored efficiently. It's dishwasher safe, so it's easy to clean. A storage container made of silicone that is resistant to heat and cold. You can write directly on the storage container with a pen, so there is no need for labeling. * Can be washed off with detergent. Lékué products are made of platinum silicone, which is safe and optimal for food contact because it does not contain "bisphenol A", which is said to be possible for human ingestion. Due to its high safety, platinum silicone is a safe material used in many medical devices and products for infants and toddlers (e.g., the suction part of baby bottles).