Quickest way to boil a kettle, in a car?
The stainless thermos is not the same as a vacuum flask,a good vacuum flask will keep water at a higher temperature for 24 hours,the stainless only keep hottish for 8 to 10 hours,if you read carefully you will see that stainless thermos never say it's a vacuum flask otherwise trading standards would be straight on to them.
hope this help Alan231
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