The sealing performance of the REVOMAX 16oz 20oz 32oz Stainless steel insulated vacuum flask is very good, and the heat preservation effect is also the best. Whether it is cold or hot, we have done experiments. We used the REVOMAX 16oz 20oz 32oz Stainless steel insulated vacuum flask to fill it with ice cubes and boil it in boiling water at 100 degrees for several hours. The ice cubes still haven't melted; similarly, use a 16oz 20oz 32oz Stainless steel insulated vacuum flask filled with 100-degree boiling water, put it in the refrigerator for several hours, and the poured water can still reach 95 degrees. This can only be done with REVOMAX cups.
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