Coir door mats rely on processed coconut fibre. Coconut fibre provides strong brushing action. The structure suits doorway placement. The mat surface scrapes dirt from footwear. Less dirt reaches internal floors. The Origin of Coir Mat Materials Coconut shells provide the raw fibre. Processing prepares the fibres for mat production. https://antifatiguematting46777.tinyblogging.com/understanding-coir-entrance-mats-83091816