Coir door mats rely on processed coconut fibre. These fibres are stiff, coarse, and durable. They are designed to sit at access points. The mat surface scrapes dirt from footwear. This reduces the amount of debris entering a building. How Coir Fibre Is Produced Coconut shells provide the raw fibre. https://andrefdxph.ampedpages.com/what-defines-a-coir-door-mat-66247106