Not sure what the reviews are saying since I haven’t looked at any, but I did order these previously and had an issue with one of them (gifted the other). The air I inflated would leak out somewhat slowly over the course of a few hours. This presumably caused condensation to occur on the bottom outside (if not a water leak). Haven’t tested it’s capacity to hold room temp water in or out.
I wonder if the manufacturer did any QA in the fabrication. At this point, the only time I’d ever use this again, without further testing, is if I carried ice packs in lieu of plain ice.