This poly-tarp is made from a heavy-duty polyethylene plastic, has a rope reinforced on all sides for added strength. Mildew resistant and water repellent Tear resistant construction Size: 16 (4.9m) x 20 (6m) Ideal for; transportation, industrial, agricultural, marine, construction, recreational, home and utility applications. This poly-tarp has rope reinforced hem on all sides, reinforced corner grommets and rust resistant grommets approximately every two feet. It has been treated for added protection against damaging ultraviolet light.