Esbit stainless steel vacuum flask 1l vf1000ml made of high quality stainless steel double walled 2 drinking mugs 2 screw plugs with and without push button for pouring function coated inner body for especially good heat preservation size packed h 270 x 90 mm weight 537 g volume 1000 ml water filling temperature 98 c environment temperature 20 c 2 c heat preservation cap after 6 hrs 85 c heat preservation cap after 12 hrs 75 c heat preservatio