Coir mats are made from coconut husk fibres. Coconut fibre provides strong brushing action. 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 Coconut shells provide the raw fibre. The husks are soaked, https://elliottefbhb.uzblog.net/understanding-coir-entrance-mats-52616232