DeWitt SBLT4300 Sunbelt Ground Cover Weed Barrier, 4-Feet Width by 300-Feet Length Sunbelt ground cover weed barrier UV stabilized and permeable to air and water and a low cost, ecology safe alternative to herbicide use Allows air and water to penetrate for worry-free irrigation Guaranteed to last five years in direct sunlight; for greenhouse and outdoor use Measures 4-feet width by 300-feet length