Coir mats are made from coconut husk fibres. These fibres are stiff, coarse, and durable. This makes coir mats suitable for entrance use. The mat surface scrapes dirt from footwear. Less dirt reaches internal floors. The Origin of Coir Mat Materials The husk surrounding the coconut is the source material. https://collinyozmq.blogdon.net/what-defines-a-coir-door-mat-55407282