Leifheit Thermos flask Coco 0.75 L stainless steel

With this model, it's the other way round: keeping warm is "very good" (TØ with regard to 85-40 °C: 26:05 h), but keeping cold is only "good" (TØ with regard to 7-10 °C: 8:15 h). Unfortunately, the drinking cup can heat up noticeably from the outside with 46.1 °C (tmax), so ideally it should be held by the narrow rim made of hard plastic. should be held.