The Stratec 5000 Geosynthetic Clay Liner is made of a mechanically bonded composite, of granulated, embedded and fixed between two layers of Geotextile. Geosynthetic clay liner does not require welding on site, so it is quick and easy to install and does not require the use of specialist personnel or equipment. The liner is made of Bentonite Clay, a natural product, making it a very environmentally suited choice for a liner.