We have a Coleman double-bed size inflatable air mattress. It comes with a battery operated pump. The mattress works well for us, you will not feel the ground. The pump is reversible and can be used to deflate the mattress when you are ready to leave. I bought it after talking to a friend who has the same one. We are well past fifty and the mattress works for us. If I choose to sleep in my truck I use a self-inflating backpacking pad and a 1/4" army surplus closed cell foam pad. That works okay for me.