Coir is a fiber from coconuts that is used in a variety of applications. It is made from the husks of coconuts and is a natural, biodegradable material. Coir is strong and durable, making it an ideal material for use in rope, mats, brushes, and other products. It is also used as a soil amendment to improve soil structure and water retention. Coir is a sustainable resource that can be harvested without damaging the environment.