The length of time that any drinking vessel will insulate their contents is highly dependent on how the vessel is used. The external variables that make a significant difference are room temperature, exposure to radiation (sunlight) and how many times the lid is opened. Several other variables also affect the insulation performance of a vessel.The table below shows the maximum time that a beverage can stay hot or cold in our vessels. - Insert Table here!The reason the Multi insulates far better than our other products is due to the vacuum-insulated construction of these stainless-steel vessels. The Glass Multi will still insulate reasonably well due to the double-walled construction. The Mini does not insulate well due to the compact single wall design.