Brown poly tarp is made from high-density woven polyethylene, 7 mil thick, with a 10x8 weave. It is UV treated on both sides for superior sunlight protection. The rope-reinforced hems add strength, and the material is rot and mildew resistant, with water and wind resistance. Grommets are rust-resistant and spaced every 3 feet. The tarp is available in large sizes: 8'x10', 12'x16', 20'x20', 20'x40', and 30'x50'. π Product summary: Brown poly tarp 7 mil thickness 10x8 weave High-density woven polyethylene UV treated on both sides Rope-reinforced hems Rot and mildew resistant Water and wind resistant Rust-resistant grommets every 3 feet Available sizes: 8'x10', 12'x16', 20'x20', 20'x40', 30'x50'