Someone asked this question a few years ago and the answer was that the Evernew Japan website gave a temperature rating. I couldn’t find that information on the website myself, so I am curious if anyone knows or has tried putting hot water in the Evernew soft water bottles.
This would be to sleep with, not to drink, and I would back it up in a zip-lock bag. I’m trying to avoid carrying a nalgene just because I might want a hot water bottle to sleep with.
