Used for about 8 months from August 2024. Can be used in either a microwave (with a small amount of water for 5 minutes) or with disinfectant. It's very convenient as it can be used as a storage container, as you can microwave it and leave it with the lid open until it cools down. We used it in the microwave, so we lost the inner lid for use with disinfectant. Also, we threw away the box, so everything in the photos is what you get. There are some dried-up calcium deposits from using tap water. Retail price: 2,780 yen