Made of coir, a dense fiber that is a renewable resource. Coir is coarse and durable, great for scraping shoes clean, weather tolerant, absorbs moisture and retains its shape. The vinyl backing increases the mat’s durability and helps keep the doormat held in place. For best results keep in a sheltered area, such as a covered porch, to keep extreme moisture and sunlight to a minimum. To clean your doormat vacuum, sweep or lightly hose off.