Natural coir mats are made using coarse coconut fibres. The raw material is treated and shaped into firm matting. The finished mat has a rough texture. The fibre texture scrapes mud and debris from shoes. Coir mats are commonly placed at entrances. They are used inside buildings and under canopies. https://entrancematting54050.uzblog.net/an-overview-of-coir-entrance-mats-52923521