Manufacturer Unknown No instruction manual, so the capacity is also unknown. Regarding heat retention and cold insulation, I don't know the details, so please refrain from asking questions. The bottom diameter is 12.5 cm. I fell in love with the cute ivory color and bought it, but I only put hot water in it once, and then stored it at home. ○ There are noticeable scratches on the front of the pot and the bottom. For those who understand and accept the item being recycled. This is not a new item, so please refrain from purchasing if you are at all concerned. No price reduction, no returns. Please be sure to read the profile section before purchasing.