Alliance Gator 005560 4' x 50' Gator GF3 Spunbond Fabric - Gator GF3 is a spunbond fabric made of polyester that allows air and water to pass through and reach the plant. It’s formulated to resist deterioration due to exposure to ultraviolet light and mildew and is inert to commonly encountered soil chemicals. The fabric is commonly used in landscaping, planting beds, under mulch, in weed control applications and more. It has an expected lifespan of 20 years.