Coir mats are made from coconut husk fibres. These fibres are stiff, coarse, and durable. They are designed to sit at access points. Foot traffic activates the cleaning action. This reduces the amount of debris entering a building. The Origin of Coir Mat Materials Coconut shells provide the raw fibre. https://manuelzrexm.bloguetechno.com/what-defines-a-coir-door-mat-75534653