Noah barrier fabric actually resists moisture, yet it breathes to allow any trapped moisture, seam seepage or condensation to easily evaporate. The unique construction process (patent pending) results in a cover with maximum all-weather protection... highly water resistant, dust resistant, UV resistant and breathable to help make sure moisture and/or heat don't stay under the cover. Made in the U.S. by Kimberly-Clark, the fabric weighs only 4.75 oz./sq. yd., so it's easy to handle and fold. High-tech, bonded 4-layer composite uses bi-component side-by-side technology for twin spunbond outer layers, a film barrier, and a soft bi-component spunbond inner layer.