Natural coir mats are made using coarse coconut fibres. The husks are processed to form a dense mat surface. 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://beauqjbqf.tinyblogging.com/what-are-coir-mats-83460611