The people behind Evergreen Recreation Vehicles believe they have a corner on the future. They produce travel trailers and 5th wheels that are eco-friendly because no wood is used in their manufacturing process. But what may be more important to you is the fact that all Evergreen Ever-Lite trailers are built with lightweight composite materials which eliminate any potential for moisture, seepage, dry rot and mold. Your trailer will last longer, remain a healthy environment for your family and can increase your gas mileage by virtue of its lighter weight. Here's a demonstration test showing that what may happen with RVs made of wood can't happen with an Ever-Lite.