Natural coir mats use fibres taken from coconut shells. The material has a naturally rough texture. The structure suits doorway placement. Foot traffic activates the cleaning action. This reduces the amount of debris entering a building. How Coir Fibre Is Produced The husk surrounding the coconut is the source material. https://louisxfhng.dgbloggers.com/39946398/an-introduction-to-coir-mats