Natural coir mats use fibres taken from coconut shells. The material has a naturally rough texture. They are designed to sit at access points. Foot traffic activates the cleaning action. This reduces the amount of debris entering a building. How Coir Fibre Is Produced Coconut shells provide the raw fibre. https://rylantcgjk.onesmablog.com/an-introduction-to-coir-mats-80159163