Windbreaker

I have the problem but I don't have a "standard" fix.

What I do have is what my wife came up with. She made, from cloth, big round tubes filled with quilting filler. These we lay around the bed sides and ends kind of like bumpers on a baby's crib. They not only prevent heat transfer but also serve as day pillows for those rainy days spent mostly inside the camper. For travel they serve a protection for the TV and musical insturments.