Why Does Multiple Layers Of Bubble Wrap Insulation Significantly Decrease Heat Loss

Why does multiple layers of bubble wrap insulation significantly decrease the loss of heat from an aliminium an of boiling water ? This is called heat transfer due to a phenomenon. In which is the flow of energy in the form of heat.
Does bubble wrap instulate an aliminium can of hot water. We the temperature be a dramatic change.Why is bubble wrap will multiple layers of bubble wrap instulation significantly decrease the loss of heat from an aliminium can of boiling water.
If multiple layers of bubble wrap instulation are used to prevent heat from leaving a can of boiling water, it will be more effective in preventing heat loss then only one or no layers of instulation around the can. The cans with multiple layer of bubble wrap will prevent