The Global Geosynthetic Clay Liner Market Size is Expected to Grow from USD 467.67 Million in 2023 to USD 689.53 Million by 2033, at a CAGR of 3.96% during the forecast period 2023-2033. Geosynthetic clay liners (GCLs) are advanced materials made up of a layer of natural sodium bentonite clay encapsulated between two geotextiles or other synthetic materials.