We recently purchased a new travel trailer. The queen bed is a residential size inside. The mattress is probably 4 inches thick. Our backs hurt from sleeping on it. I ordered this 6 inch queen-size memory foam mattress and we put it in our travel trailer on top of the mattress that came on the bed. It is absolutely amazing!!! We slept so good. I am so happy that we did this. I honestly can say that it sleeps better than our bed at home, so I think I am going to order the 6 inch for our bed at home.
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