a panel system configured to be circumferentially disposed proximate the base of a recreational camper trailer so as to environmentally isolate the area generally underneath the recreational camper trailer . the panel system is operable to assist a user maintain a temperature within the camper trailer that is different than that of its surroundings . the panel system includes a plurality of panels that are hingedly and releasably secured to each other so as to be configurable to accommodate recreational camper trailers of varying sizes . each panel of the panel system includes a first layer and a second layer . furthermore , each panel includes a hinge mounted on the first and second side edges that are operable to facilitate the folding of the panel system in a z - fold pattern for transportation when not in use .