The problem with thermos flasks is that any sudden jolt can leave you with a leaking plastic tub full of silvered glass shattered into tiny pieces ![Smile](https://katriders.com/core/images/smilies/icon_smile.gif)
I think some of the posher ones are just solid aluminium inside and would work better, but I've not used one for years since a sudden jolt
![Smile](https://katriders.com/core/images/smilies/icon_smile.gif)
I think some of the posher ones are just solid aluminium inside and would work better, but I've not used one for years since a sudden jolt
![Wink](https://katriders.com/core/images/smilies/icon_wink.gif)
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