There are several materials commonly used in insoles that offer good breathability. Some of these materials include:
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Cork: Cork is a natural material that is known for its breathability and moisture-wicking properties. It allows air to circulate around the foot, helping to keep it dry and comfortable.
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Leather: Genuine leather is another material that offers good breathability. It allows air to pass through, preventing excessive moisture buildup and maintaining a comfortable environment for the feet.
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Mesh or fabric: Insoles made from mesh or breathable fabric materials can provide excellent breathability. These materials allow air to flow through, promoting ventilation and reducing sweat and odor.
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Poron: Poron is a high-performance foam material that is often used in insoles. It has open-cell structure, which allows for good breathability and moisture management.
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EVA (Ethylene-vinyl acetate): EVA is a lightweight and flexible foam material commonly used in insoles. It offers good breathability, allowing air to circulate and preventing excessive heat and moisture buildup.
It’s important to note that the breathability of insoles can also depend on the design and construction of the shoe they are used in. Proper ventilation in the shoe, such as breathable uppers or perforations, can enhance the overall breathability of the insoles.
More materials can be found here: https://www.eva-block.com/products/.