Coir mats are made from coconut husk fibres. These fibres are stiff, coarse, and durable. The structure suits doorway placement. Foot traffic activates the cleaning action. This reduces the amount of debris entering a building. The Origin of Coir Mat Materials The husk surrounding the coconut is the source material. https://coirmat04712.blogocial.com/what-defines-a-coir-door-mat-75053901