I have Lifeventure's thermos right now, their 0.5 Litre one. Got it at the local outdoor shop and leaks like mad now.

Highly don't recommend it.

Would like to try Sigg's, but do you know if they put the lining on them like their water bottles?

Looking at Thermos now, they have one thats similiar to the Lifeventure one I have now. Fits nice in the briefcase. Debating on it.

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"One should not increase, beyond what is necessary, the number of entities required to explain anything"
William of Ockham (1285-1349)