CCW MiraCLAY GM is a needle-punched, thermally reinforced composite comprised of a uniform layer of sodium bentonite clay that is sandwiched between a durable puncture-resistant non-woven geotextile and the slit film woven geotextile. The needle-punched fibers are thermally fused to the woven geotextile to enhance the reinforcing bond and an HDPE film is applied to the woven surface to lower the hydraulic conductivity.