TOUGH ALL-PURPOSE TRIPLE-LAYER TARP (20' X 30') Constructed of Specially Reinforced, Laminated, High Density Poly Fabric. Three-Layer Reinforced Construction. Water, Rot and Mildew-Resistant. Polyethylene Weave(vertically & horizontally)constructed between Layers Sealed-in Hems, Reinforced Corners & Rustproof Grommets on Corners.