PRO-5 Weed-Barrier(R) is the industry's best 5 oz. woven, needle-punched, polypropylene fabric designed for professional and commercial use. PRO-5 Weed-Barrier(R) has been approved by leading landscape architects and most government agencies. PRO-5 conserves soil moisture, increases growth, and prevents unwanted weeds from germinating. PRO-5 is striped every twelve inches to aid in plant alignment.`