Geotextiles are fabrics made of woven or non-woven polyester, polyethylene, cotton or other materials that are used in environmental applications related to soil and earth. They are manufactured through knitting or sewing fibers and can be used for filtration, drainage, erosion control, sediment control, and soil reinforcement. Common applications of geotextiles include controlling sediment and drainage in soil, reinforcing soil strength, and aiding filtration processes.