6.3 oz. per square yard, high-density 1600 denier, 12-MIL thick, strong and durable fabric for heavy duty applications. Ideal for land fill, soil erosion and reclamation. Highly effective for salt pile, dirt, swimming pool, equipment, flea market, and boat storage covers as well as economical field covers and portable canopy covers. High ultraviolet inhibitors. Available in 72" and 144" widths.