N-Vire™ Mat 040-1 and 075-1 are multi-functional products comprised of a structured strand core and filter-fabric that can either assist with root entanglement & soil reinforcement or act as a moderate or high-flow drainage product in your green roof assembly or landscaping application.When used with the filament-side up, the product assists with root entanglement and soil reinforcement, allowing roots to grow into and become tangled with the 3-dimensional polymeric core. This feature facilitates the easy transportation of vegetation from one place to another. Alternatively, when installed with the fabric side up, the mat creates a 0.40″ to 0.75″ thick air-space, enabling incidental moisture to drain away and ventilate out effectively.”