Cheap Plastic vapor barrier a little smaller than the floor of the tent.

when It gets a Hole . I just replace it.. as a Moisture barrier even dry cleaner bag weight plastic will do.

I rolled it up to the width of the pole sections, with the poles in the middle .

rolled tent goes in a Bag, width not compressed but strapping the tent to the Top of the Rack

& tightening The Buckles. it certainly gets made smaller