Coir door mats rely on processed coconut fibre. 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://judahkjzdu.onesmablog.com/what-defines-a-coir-door-mat-80455518