Natural coir mats use fibres taken from coconut shells. These fibres are stiff, coarse, and durable. 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 Coir fibre comes from the outer shell of coconuts. https://entrancemats69123.tribunablog.com/what-defines-a-coir-door-mat-53469399