Abstract: The present invention relates to a packaging system, in particular a packaging system for transporting foods, such as pizzas. The packaging system comprises at least three layers of material, wherein at least two adjacent layers of material are welded together thereby forming an inner system defining at least one compartment, said compartment extending around at least a part of a central area of said two adjacent layers of material, and said compartment being closed by a valve means, and wherein the at least third layer extends above or below at least the central area of the two adjacent layers.