Made of natural coir, a dense fiber that is naturally mold and mildew resistant. Coir is a renewable resource that is durable and weather tolerant. Expertly made by hand of 100% coir, this durable, heavy-duty doormat is earth friendly, naturally abrasive to scrape shoes clean, retains its shape and absorbs moisture. For best results keep in a sheltered area such as a covered porch, keeping extreme moisture and sunlight to a minimum. Average height is 1" to 2" thick. Vacuum, sweep or lightly hose clean.