Geosynthetics are synthetic materials used in civil engineering and environmental projects to improve soil stability, drainage, and erosion control. They come in various forms, including geotextiles, geomembranes, and geogrids, each serving specific functions in construction and land management. These materials are often used in applications such as road construction, landfill liners, and slope stabilization. By enhancing the performance of soil and other natural materials, geosynthetics help reduce costs and environmental impact while increasing the longevity and safety of infrastructure projects.