Each Gulf Stream Envision travel trailer is built on a welded aluminum frame with laminated fiberglass walls for lightweight towing, and they also include Azdel synthetic substrate in the side walls. You will find plenty of features that will excite you with the additional standard packages that offer power features, worry-free camping, a heated and enclosed underbelly for four seasons of travel. You'll enjoy the chef's best kitchen, stainless steel appliances, plus, the central command switch panel is great to have so that you can control many of the electrical functions