What can happen to a Container, that can Change Volume, [Balloon] if the Pressure Increased more than the Outside Environment?

-If the Pressure Increased inside the Container, then the Container will Expand, as there is more Force that is Pushing the Container to Expand, which is greater than the Outside Pressure, which is trying to Push the Container In. -So the Container Expands, meaning the Volume also Increases. But then that means the Particles have Further to Travel, therefore Lowing the Pressure as the Volume Increases [Constant] -So when the Pressure of Inside = Pressure of Outside, the Container will Stop Expanding. The Opposite is True [Lower Pressure Inside --> Container will Decrease in Volume as Pressure is Greater Outside --> Pressure of Both Inside and Outside is the Same --> Nothing Happens]