It is a thermos with a lid-cup. It has double walled sainless steel vacuum construction with a screw cup and valve.
Capacity: 700 ml.
Beverage temperature measurement inside a closed flask:
at an ambient temperature of +20 °С
starting temperature — 95 °С
after 3 hours — 85 °С
after 6 hours — 75 °С
after 12 hours — 65 °С
after 24 hours — 50 °С