Agfabric Pro-4 Weed Barrier is the industry's best 5 oz. woven, needle punched, polypropylene fabric designed for professional use. Agfabric Pro-4 has been approved by leading landscape architects and government agencies. It conserves soil moisture, increases plant growth, and prevents unwanted weeds from germinating. Gold stripes located 12 inches apart make for easy plant alignment. Additional Features Stops weeds Allows air, water, and nutrients to pass through Superior light blocking Conserves soil moisture Easy to install Environmentally safe Great for commercial Landscapes Professional quality Striped for easy plant alignment Choice of professionals Great for permanent landscapes Great for xeriscapes We recommend this product be covered by mulch or another material to extend the product's life. Prolonged exposure to sunlight will reduce the lifespan of the product and void the warranty.