Core & Main Geosynthetics CNM100SF woven geotextile is made of slit tape polypropylene yarns, which are woven such that the yarns retain their relative position. Produced from first quality raw materials, these geotextiles offer optimum performance for silt fence. C&M Geosynthetics CNM100SF resists ultraviolet deterioration, rotting, biological degradation, naturally encountered alkalis and acids