Coir mats are made from coconut husk fibres. Coconut fibre provides strong brushing action. The structure suits doorway placement. Shoes passing over the fibres release soil. This reduces the amount of debris entering a building. The Origin of Coir Mat Materials Coir fibre comes from the outer shell of coconuts. https://coirentrancemats34433.tblogz.com/understanding-coir-entrance-mats-52651592