It's strong yet flexible and it obstructs weeds while allowing circulation. Simply put, the Landmaster PolyPro 500 exceeds expectations. Offering exceptional strength, durability and UV resistance, the woven, needle-punched Landmaster PolyPro 55 will conform easily to any landscape. Its consistent opening size prevents weed growth and promotes air and water permeability so your plants can remain well-nurtured. This landscape fabric remains flexible for easy handling whether you're using it for a soil separator or landscape control and it comes in a variety of sizes to fit your needs.