The Innovan
The Innovan slide-on is constructed from many moulded parts but the three main fully moulded components are the base, the furniture, and the roof. The base and the furniture are bonded together to form a structure which is much stronger than a conventionally built caravan of the same weight. The roof has sandwiched type construction with a layer of PVC honeycomb material between two layers of fibreglass. This provides excellent insulating properties as well as the combination of strength and lightness. See more here: http://www.innovan.com.au/