Absolute Barrier® X40BAL is a seven-layer co-extruded geomembrane consisting of a durable high-density polyethylene (HDPE) with an inner core of highly effective EVOH barrier resin, designed specifically as a barrier against odors, methane, radon, and VOCs. High strength HDPE provides excellent chemical resistance and durability. The combination of these premium resins provide unequaled barrier performance in demanding buried applications.