Coir mats are made from coconut husk fibres. The material has a naturally rough texture. This makes coir mats suitable for entrance use. Foot traffic activates the cleaning action. This reduces the amount of debris entering a building. The Origin of Coir Mat Materials Coconut shells provide the raw fibre. https://coirentrancemat41468.full-design.com/understanding-coir-entrance-mats-81489036