Thank you for your questions regarding the 361RW. All Road Warriors come standard with the super insulation pkg. This includes three types of insulation. We have formaldehyde free spun glass insulation, 2" block foam insulation, and a vapor moisture barrier material under the bed/bath area as well as the front cap. We also have heated and enclose tanks for extended season camping. Let us know if you have any futher questions and we hope to see you in the Heartland RV family very soon. Take care, Mike