They're hot stuff...

...these Finns!

Meet Airam , the best vacuum flask in the universe!

Guaranteed to keep your soup at 50C for twenty four hours even in the depths of an Arctic winter and I know, 'cause I've tried. 

Well, maybe not in sub zero temperatures but it did keep water scalding hot overnight on the kitchen window sill.  And whats behind this wonderful technology? A high quality silvered glass vacuum flask designed in 1934.
and still being made in Finland.

Tomorrow we head up to the far north and we WILL have nice hot cup of tea en route!