[Low-Tech] [High-Tech] Portable cooling: higher-TL replacement of water jugs?

[vicky_molokh]

Greetings, all!

An unglazed earthenware jug cools its water by evaporation (5%/day), providing +1 to Survival (Desert and Jungle) [LT33]. Looking through High-Tech, I haven't found similar solutions. What would be a good variant container for making a cooling water storage while travelling for this +1, but without risking the fragile jugs of low-tech?

Thanks in advance!

[acrosome]

An insulated thermos full of ice.

[vicky_molokh]

Originally Posted by acrosome

An insulated thermos full of ice.

That requires ready access to ice. Hard to get in a jungle hikevaway from civilization.

[starslayer]

There are multiple evaporative cooling water bottles on the market. They use a hydrophillic gel instead of vulnerable clay. (No copy/paste on my phone but if you look up evaporative cooling water bottle you will have multiple hits)

Peltiers would be able to cool water and be both lightweight and quick. They would not be efficient and would also require power.

[safisher]

Canvas water bags.

[vicky_molokh]

Originally Posted by safisher

Canvas water bags.

Thanks! That's a very interesting thing. I want that for my character. How does the price and mass compare to a standard Wineskin? At what TL did they appear? So far, I've only found one example with an explanation.