The shape of the ceramic hot-water bottle meets high aesthetic and functional requirements. The flat design without any unevenness nestles comfortably to the body. The lid is inserted in the middle of the object. The material ensures that the skin of the user is not dried out. The hot-water bottle holds the temperature well so that the heat fades out only in the morning hours. The same water can be reheated in the form after removing the lid in the microwave. The sustainable option takes into account the shortage of resources in Japan after the earthquake of 2011.