Presto Geosystems invented geocells in the late 1970s and has been leading geocell technology ever since with important product advancements, design, and construction accessories for higher performance and faster installation. Presto’s GEOWEB® system is the industry’s ‘most complete geocell system’ designed with fully engineered components to withstand the most challenging site problems. Made from robust high-density polyethylene (HDPE) since conception, GEOWEB geocells offer the highest, longest-lasting, and most proven performance of any geocell system in civil applications.