Hishiesu Doi Kinzoku Kasei Co., Ltd. Hot Water Bottle 2.3 Liters Weight 475g Galvanized Steel Hot Water Bottle Equipped with an air intake valve stopper, confirmed no water leakage. *Not a flat bottom. Compatible with gas stoves. Not compatible with IH (induction heating). Long-term home storage. Please check the condition in the photos. Metal discoloration and rust are present. I removed rust from affected areas as much as possible, but discoloration from rust remains. Please refrain from purchasing if you are concerned about these issues. Wrapped in bubble wrap and placed in a delivery bag for standard mail (teikeigai) shipping. Please understand the price includes shipping.