Review on Thermos 1 liter compact Arktika 105-1000 with two cups by Dorota Masiewicz ᠌

Now he pushed the foreheads of the Arctic 105 and the old Thermos ncb-12b. Thermos 1.2 liters, Arctic 1 liter (which means, in theory, the heat capacity should be lower). In the evening at 23, after warming up both, poured boiling water over them. In the Arctic, the upper part of the body and the lid immediately heat up (and moreover, very clearly). Thermos is outwardly cold. Both were kept overnight at room temperature. At 10 am in Thermos 77⁰, in the Arctic 78⁰. I'll see how it goes. The thermos is already five years old, if not more, the Arctic is two days old. The price between them differs by 4.5 times. Addition: after 26 hours the temperature in the Arctic is 61⁰, in Thermos 62⁰. The experiment is over. The purchase of the Arctic, I think, is fully justified by the density.