Natural coir mats use fibres taken from coconut shells. Coconut fibre provides strong brushing action. This makes coir mats suitable for entrance use. Foot traffic activates the cleaning action. Indoor surfaces stay cleaner for longer. The Origin of Coir Mat Materials The husk surrounding the coconut is the source material. https://caidenhapiv.blogocial.com/what-defines-a-coir-door-mat-74997539