PE foam has numerous advantages for shoe manufacturing. The comfort and performance of shoes can be enhanced with the use of PE foam in insoles and midsoles, and the shoes can become even lighter weight. PE foam provides excellent cushioning in insoles and midsoles, and greatly reduces shock on joints when people walk and run. From a design perspective, PE foam is very flexible and can assume the shape of the object it is meant to support. For people with foot problems, or for people who are on their feet for long hours, custom support from PE foam can help relieve pressure on foot problems. From an athletic performance perspective, PE foam in midsoles can also help improve the overall performance of the wearer. The same open cell structure in PE foam can also help athletes by improving the overall comfort of the shoe. PE foam is very easy to process and, like other foams, can be designed to have varying densities, and thicknesses. This helps shoe manufacturers develop a full product line, ranging from casual shoes to high performance athletic shoes.