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://anti-slip-mats42060.affiliatblogger.com/91279670/understanding-coir-entrance-mats