Coir mats are made from coconut husk fibres. The material has a naturally rough texture. They are designed to sit at access points. Foot traffic activates the cleaning action. This reduces the amount of debris entering a building. From Coconut Husk to Entrance Mat Coconut shells provide the raw fibre. https://trevorhudjq.blogitright.com/39480157/what-defines-a-coir-door-mat