The sole of insoles can be made from a variety of materials, each with its own properties and benefits. Some common materials used for the sole of insoles include:
1. Foam
Foam materials such as EVA (ethylene-vinyl acetate) or polyurethane foam are commonly used in insoles. They provide cushioning, shock absorption, and comfort. Foam insoles are lightweight and can be easily trimmed or shaped to fit different shoe sizes.
2. Gel
Gel insoles are made from a soft, gel-like material that provides excellent cushioning and shock absorption. Gel insoles can help distribute pressure evenly across the foot and provide enhanced comfort. They are often used for activities that involve high impact or prolonged standing.
3. Cork
Cork is a natural material that is sometimes used for insole soles. It offers good shock absorption and provides a firm yet supportive feel. Cork insoles can mold to the shape of the foot over time, providing a custom fit and added comfort.
4. Rubber
Rubber insoles are durable and provide good traction and stability. They can withstand wear and tear and are often used in athletic or work-related footwear to provide support and protection.
5. Thermoplastic materials
Certain insoles may use thermoplastic materials such as TPU (thermoplastic polyurethane) or TPE (thermoplastic elastomer). These materials offer a balance of cushioning, support, and durability. They can be molded or shaped to provide customized support for different foot types.
It’s worth noting that some insoles may have a combination of different materials to provide specific benefits, such as a foam base with gel inserts for targeted cushioning. The choice of insole material depends on factors such as the intended use, desired level of cushioning and support, and individual foot needs.
More materials can be found here: https://www.eva-block.com/products/.