DeWitt 3YR3100RF 3 Year Weed Barrier Retail Refill, 100-Feet 3 Year weed barrier retail refill An entry-level 1 ounce garden fabric used to suppress weed growth without the use of chemicals Allows air, water and nutrients to pass through; UV treated fabric It conserves soil moisture and promotes plant growth by eliminating competing weeds Measures 3-feet by 100-feet; comes in 4.1 ounces