Roughneck 3.4-Oz. Heavy-Duty Poly Tarp - Brown/Green, 20ft. x 30ft. Perfect for covering machinery and equipment Made with 3 layers for superior durability First layer is tightly woven 10 strands per inch x 10 strands per inch of polyethylene fiber Woven fabric has a double laminated coating of polyethylene, producing a solid weight of 3.4-oz. per sq. yd. Provides excellent tensile strength and tear resistance