I have a few Thermos products, love them.

If you want to keep your drink cold or hot for very long time, make sure the flask is "vacuum" insulated. Not only double walled. It should be stated on the product. If not, don't buy.

A lot of of cheaper flasks are either using only double walled or foam insulation. Even lower ranges Thermos are foam insulated. So choose carefully.

Now some Thermos products are made in China, as long as it is "vacuum" insulated, it is good.




This post has been edited by gaman: Mar 6 2017, 03:12 PM