Geotextiles - the natural erosion controller! These nets have varying densities depending on their application, but as a whole they serve as slope stabilization agents prior to revegetation. Geotextiles promote new vegetation by absorbing water and preventing top soil from drying out. Coir geotextiles absorb solar radiation just like natural soil, and unlike geosynthetic materials, it provides good soil support for up to three years, allowing natural vegetation to become established.