Thermos flask

tomferry

tomferry

Well-known member
Hello everyone .

Well it?s a rather odd question for a caving forum but I think their will be many experts on here .

I want to get the wife a flask for Mother?s Day from our son?s she does 6am-2pm work and has her break at 11am , she leaves home around 5am so it needs to keep 1 or 2 cups of hot drink very warm for around 6 hours ? Doesn?t need to be large and am happy to spend a good amount of money .

Please fire some recommendations  (y)

 
Cantclimbtom

Cantclimbtom

Well-known member
A small stainless steel flask won't keep a drink very hot for 6 hours, the far more breakable ones with traditional glass work noticeably better and stands a good chance of being  hot as long as you fill it for 5 mins with some boiling water and empty to warm it up inside, before you put your drink in it. 400 or 500ml size is common for a small flask (although the smaller ones cool down quicker) Somewhere in the ?10 to ?25 range. I think there was once a law or British standard that said all thermos had to be tartan, but those times are long gone, maybe the EU banned it back in the day, not sure
 
I

Ian Ball

Well-known member
I have a 590ml kleen kanteen and I think they are very good but 6 hours is pushing them to their limits. 

The website claims 17 hours though!  Mine is now about 6 years old, perhaps it has had one too many bumps.
 
Pitlamp

Pitlamp

Well-known member
I beg to differ. I have a range of different sizes of Lifeventure stainless steel flasks and each one will do well over 6 hours. To be honest I swear by these. They were originally recommended by Shaun of the former Hitch 'n Hike shop (sadly stopped trading) and, like all his advice, it proved to be excellent.

If you really want longevity, make a cheap fleece insulation cover.
 
tomferry

tomferry

Well-known member
I have been looking at a thermos king 470ml 5 year guarantee claims 17 hours , could make a nice jacket for it .  Good idea hadn?t thought of the jacket . 
 
J

JamesM

New member
I would second the suggestion of the lifeventure flasks - this one : https://www.gooutdoors.co.uk/15893063/lifeventure-thermal-mug-15893063
Available in loads of colours.

They also fit perfectly in a British army PLCE ammo pouch!
 
Mark Wright

Mark Wright

Active member
I always take a flask on digging trips and i've had quite a few different ones over the years but I treated myself to a new GSI 1L Glacier Flask and a couple of their smaller Micro Flip mugs for Christmas and they are the best flasks I've ever had. The tea is still burning my lips after 4 hours.

Mark

 
Mr Mike

Mr Mike

Active member
Not that I take it underground, but for walking a normal 500ml stainless Thermos brand flask seems to keep hot drinks proper hot on +8Hr walks.
 
Leclused

Leclused

Active member
And what about a Sigg thermo bottle.

https://sigg.com/en/thermo-flasks/?p=1

Lots of choices there in several styles.

And being a Sigg product ....
 
HardenClimber3

HardenClimber3

Member
Thermos Ultimate flasks are very good....and quite robust, not too heavy or bulky. A screw in closure rather than press, which works well and pours cleanly and isn't as fragile.
Sometime they are almost too good at keeping the contents warm.
 
wormster

wormster

Active member
My 20 year old IKEA vacuum flask is still going strong after countless trips under and overground, mind you with all the dents it only keeps coffee warm for about 4 hours nowadays  :tease:
 
JJM

JJM

Member
Tomferry said:
Lots of great advice thanks very much everyone  (y)
Click to expand...
If you are the sort of person that likes a good chart, these gays have tested the heat-holding properties of a bunch: https://outdoorsmagic.com/article/best-thermos-flasks-reviewed/
The Thermos Ultimate mentioned above performed the best!
 
Leclused

Leclused

Active member
JJM said:
Tomferry said:
Lots of great advice thanks very much everyone  (y)
Click to expand...
If you are the sort of person that likes a good chart, these gays have tested the heat-holding properties of a bunch: https://outdoorsmagic.com/article/best-thermos-flasks-reviewed/
The Thermos Ultimate mentioned above performed the best!
Click to expand...

And a Sigg is number two in the graph. 😀😀😀😀
 
kay

kay

Well-known member
They've done evil things with the graph, haven't they? The apparent universal catastrophic decline after 8 hours is an artefact of the irregular spacing on the graph. If you move the 24 hour point to where it should be, about a foot and a half to the right, you get a more or less linear decline. Similarly, 90mins needs moving to the left.
 
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