Coir mats are made from coconut husk fibres. These fibres are stiff, coarse, and durable. The structure suits doorway placement. The mat surface scrapes dirt from footwear. Less dirt reaches internal floors. How Coir Fibre Is Produced Coconut shells provide the raw fibre. Processing prepares the fibres for mat production. https://antifatiguemats45511.pointblog.net/an-introduction-to-coir-mats-88960216