Natural coir mats use fibres taken from coconut shells. Coconut fibre provides strong brushing action. They are designed to sit at access points. Shoes passing over the fibres release soil. Less dirt reaches internal floors. From Coconut Husk to Entrance Mat Coir fibre comes from the outer shell of coconuts. https://coir-mat-cut-to-size39395.blogolize.com/understanding-coir-entrance-mats-78166593