Eva Foam is a sponge that was consist of by copolymers named as “ethylene” and “vinyl acetate”. Eva Foam provides valuable solutions lots of sectors thank to this flexible structure. Packing sector is the one of the best examples on this topic through sponge stiffness and density. Because, eva foam has successful protection processes owing to rubber-derived copolymers. Also, eva foam sheets modulate the product which is used through sponge stiffness and density. Actually this is an important example to explain what the impact of copolymers in material science. So, we can say that having a rubber structure contribute to being useful of EVA foam.