Geotextile is permeable material geotextile made of polymer fibers through hot pressing and needling, gluing, and weaving, also known as geotextiles, including several types such as woven geotextile and non-woven geotextile Geotextile is for major construction erosion control. You use this under concrete or pavement! It does allow drainage. You can use this on retainer walls and walk paths, but it is not its intended purpose. The purpose of this material is for heavy loads and high traffic. It is not a weed-stop.