Earthmate POLYDRAIN™ HDPE COMPOSITED DRAINAGE MAT is a composited drainage which consists of Earthmate Geonets made from HDPE resin with continuous filament Polyester nonwoven geotextile heat bonded on one side or both sides of Geonets. The combination of Nonwoven geotextiles and geonet offers an excellent system of “Filter-Drainage-Protection”. Earthmate POLYDRAIN™ HDPE COMPOSITED DRAINAGE MAT is installed behind waterproofed retaining walls as an effective drainage system extending to the entire construction surface, capable of uniformly and continually collecting infiltrating water. It also will provide you with practical solutions for a wide variety of groundwater and gas related problems.