This silver hot water bottle with a vacuum-insulated structure provides excellent heat retention, perfect for combating the winter cold with a capacity of approximately 400ml. - Product Name: HOT Hot Water Bottle - Color: Silver - Product Specifications: Vacuum-insulated structure - Size: Approximately 72mm x 240mm - Capacity: Approximately 400ml - Materials: Stainless steel, PP Although unopened, please understand that this item has been stored at home. ※ Please note that this is not a water bottle (＞人＜;) Thank you for looking.