From the manufacturer Whilst a coir doormat is mainly used outdoors to brighten up the entrance when people arrive, they can also be used inside too. Our coir mats are made from natural resources. The coir is made from coconut hair and the latex backing is from rubber tree sap. Our mats are made with natural materials. The mats will decompose at the end of their life. The latex backing helps prevent movement when you’re wiping your feet.