Geotextiles are synthetic fabrics made from polymers like polypropylene, polyester, or polyethylene, designed to improve the physical properties of soil. These materials serve several crucial functions, including separation, filtration, drainage, reinforcement, and protection. Geotextile fabrics are available in various forms such as geotextile sheets, non-woven fabrics, woven fabrics, and knitted materials, each suited for different engineering and construction needs.