Camping in cold weather in a popup camper

If your going to camp in cold weather in a popup there are things you can do to help
hold the heat in. Cover the top of the bunk ends with space blankets reflective side
down to hold the heat in, simply clamp them in place. And you can turn them over
reflective side up to keep the heat out.

You can also cut Reflectix inserts to fit in the windows.

The inserts really do help with the cold and as an added benefit it helps cut the
morning light keeping the trailer darker inside.