Dewitt 3-Foot by 100-Foot 12-Year Weed Barrier Fabric 12YR3100RF DeWitt weed barrier 12-year is an easy-to-use, environmentally safe fabric that controls weeds before they start The non-woven, hydro philic treated fabric allows air and water to pass through Dewitt landscape fabric minimizes light penetration to suppress weed growth Fabric is treated to minimize degradation due to UV light exposure The design also prevents unraveling and makes the material easier to cut; measures 3 by 100 feet