What Is Eva Material In Shoes

This is because the material has many great attributes that provide support stability comfort and insulation.

What is eva material in shoes.

Eva is a material favored by many shoe manufacturers particularly athletic footwear makers. Eva is what s known as a copolymer a combination of two different plastics and can vary widely in its ratios. Eva stands for ethylene vinyl acetate. A foamed midsole material that offers good cushioning and compression set.

Eva midsoles are the most common cushioning materials in modern sports shoes. Nike likes to call theirs pylon but it is the same stuff whatever you call it. Most running and casual shoe midsoles are made from eva. It is a plastic made by combining ethylene and vinyl acetate to create rubber like properties which can be used for shoe soles.

Higher quality shoes will have around 40 percent vinyl acetate and 60 percent ethylene the lower the amount of vinyl acetate the more brittle and likely to crumble the midsole will be. Soft and flexible eva is technically a foam instead of a rubber as it is formed by expanding plastic and trapping pockets of gas air in various densities. That is an elastomeric polymer that produces materials which are rubber like in softness and flexibility.