Coir mats are made from coconut husk fibres. The material has a naturally rough texture. This makes coir mats suitable for entrance use. The mat surface scrapes dirt from footwear. This reduces the amount of debris entering a building. How Coir Fibre Is Produced Coconut shells provide the raw fibre. https://titusyivgo.pointblog.net/understanding-coir-entrance-mats-88266695