With the DuPont Large GroundGrid system, you'll be creating a strong and stable foundation for any new surface. This geotextile grid is used for ground stabilization in landscape and construction projects. It simply expands into a 3D honeycomb structure that you place on your project surface and fill with gravel, soil, sand, or any other mineral infill. Its flexible material conforms to any type of terrain or area and the material can be cut to your preferred size. It's recommended that this larger grid system not be used for any ground stabilization application and to use the smaller grid system. This system must be used to fill with 3/4-inch angular stone. Set your next landscaping project up for success with the DuPont GroundGrid system. It's recommended to use this smaller grid version when stabilizing driveways and walkways due to the smaller cell design which increases stability and reduces gravel/soil migration. Do not use pea gravel as an infill.