EVA insoles are made from a material called Ethylene-Vinyl Acetate (EVA), which is a type of foam that has good cushioning properties combined with light weight and durability.
The material is a copolymer of ethylene and vinyl acetate, created by polymerizing the monomers under high pressure. EVA foam can be molded into various shapes and sizes to fit different types of shoes and foot arches. Additionally, EVA foam is resistant to water, chemicals, and UV radiation, making it ideal for outdoor activities.