ECO, The Next Generation in Ultra-Lite Travel Trailers. Most models weigh less than 3000 lbs and can be towed by most midsize vehicles. ECO may be light in weight, but it’s not on features and value. ECO models feature m......ECO, The Next Generation in Ultra-Lite Travel Trailers. Most models weigh less than 3000 lbs and can be towed by most midsize vehicles. ECO may be light in weight, but it’s not on features and value. ECO models feature multiple sleeping locations, a full bathroom and all the appliances found in larger travel trailers.