The best Thermos Thermal flask i’ve ever come across!

A look and basic test of the Thermos ultimate insulation thermal flask.
I preheat the flask, then fill with freshly boiled water. The flask is then left in my shed overnight and opened 25hrs later. The water is still hot and perfectly drinkable.

Comments

VlogCent says:

why pour it into a cold cup before testing the temp out the flask ? lol

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