nothing like the brand, which is renowned with the guarantee of quality I pre-heated by placing the thermos with boiling water the time to heat the coffee (at 4:00 in the morning) it hot until 9 THE yours NEXT DAY !! it is still very warm when it left (0.75L) without preheating it lasts a little less time but at least up to 15 / 16h the same day. He must be full of course, fills half the properties are not the same.