Natural coir mats are made using coarse coconut fibres. These fibres are cleaned, dried, and pressed into matting. The fibres create a stiff brushing action. The design supports effective dirt control at the door. They are often used in doorways and porches. They suit both indoor and sheltered outdoor areas. https://hallwayrunners91223.bloggazza.com/38558156/understanding-coir-door-mats