 This includes geotextiles, geogrids, geomembranes, geocells, and geocomposites.The synthetic nature of the products makes them suitable for use in the ground where high levels of durability are required; their main functions include drainage, filtration, reinforcement, separation, and containment.Geosynthetics are available in a wide range of forms and materials, each to suit a slightly different end-use, although they are frequently used together.