Article: The ultimate drinking flask, the search continues

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I think you must have been unlucky with the contigo as I have one (not the version you show though but which is leak proof even when rolling around my car seat. I'm very please with mine.
Alan
 
I have the stainless version of the Primus and I think it might work for you, it seems to be a different design. One to cross off the list before you even start is the Kleen Kanteen insulated. Works well but leaks and doesn't fit most cup holders.
 
I have a stainless starbucks travel mug, it fulfils all your criteria and has never let me down. I have a couple of the plastic versions too and they are pretty good. The stainless one is so good that the coffee is often still too hot to drink after a 40min journey. Got mine from hong kong via ebay.
stainless_steel_starbucks_logo_tumbler_16_oz_3.jpg
 
I took one of these on my Arctic trip.

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It was ideal for me as it didn't leak and the insulation was a bit less than perfect.

That may not sound very good but I don't like my drinks too hot so they did at least cool down slowly in this.

The other advantage was that the escaping heat warmed the outside of the mug enough to use it as a hand warmer.

Having said that, it retained enough heat to stop my drinks freezing overnight so it worked well enough for me.
 
Cheers guys, I was quite gutted with the contigo, I'll wait and see what they say about the lid but the design does look pretty much perfect. I'm wondering if the rubber seal is shot, trouble is you can't get into the lid enough to check it, does also make cleaning difficult.

Might get the stainless Primus as well just for comparison sake, not that I'm starting to get a thing for thermal flasks.... Has anyone tried the bubba kegs from the states?
 

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