Our "Queen" sized bed is like many other TT beds, the size is approximate.
๐We tried a thick sleeping bag as a cushion but finally ended up with a blue egg carton shaped foam pad from Camping World. It is about 4 inches thick. We did have to trim it to fit our bed size.
I am sure there are similar product available but we are happy with ours.
Good Luck
Twenty six foot 2010 Dutchmen Lite pulled with a 2011 EcoBoost F-150 4x4.
Just right for Grandpa, Grandma and the dog.