After some tea I can finally put a comment and say that this teapot is fine. It supports a little over a liter, makes my kettle 1.2L and I come to the completely empty inside. Cove air to keep well but good to see use if it does not break. Tea stays hot for about 1 hour. Tea tank aspen slightly when lifting the pot but does not fall when it is used. Tea is well filtered and very very little residue pass.