This is an item that was included in a New Year's lucky bag. I washed it with the intention of using it, and then stored it. Size: Height 18cm, Diameter 7cm, Cap Diameter 5.5cm Capacity: 350cc (Measured by filling with water up to the neck and then measuring with a measuring cup) Weight: 237g (Measured with a household scale) The red circle on the bottom is a convex shape, like after welding. I don't know the detailed specifications as there are no instructions, but the main body seems to have a vacuum double-wall structure (because the thickness of the lid is different when touched). Capacity...350-499ml