The list of EPP’s unique properties is long. Besides its eco-friendliness and the great freedom in design, for which expanded polypropylene is gaining increasing attention in the creative industries, it is above all the low, energy- and cost-saving weight that started the particle foam on its trail of success. While EPP is extremely robust, it is a true flyweight among materials due to its low specific density. This result: Enormous lightweight construction potential, which has secured polypropylene’s unstoppable trail of success above all in the automotive industry.