Natural coir mats are made using coarse coconut fibres. The raw material is treated and shaped into firm matting. The fibres create a stiff brushing action. The design supports effective dirt control at the door. Coir mats are commonly placed at entrances. They suit both indoor and sheltered outdoor areas. https://claytonbkuxh.tinyblogging.com/understanding-coir-door-mats-83674782