We Had a new bed at the family cono we could not sleep it was sow firm.We bought a Memory foam topper it was so much better.

I'd check QVC - one thing I like about ordering from them is you have 30 days to try out your purchase and if you don't like it back it goes - no questions asked. I've purchased MANY things from them, most of the items I've kept, but some, did go back.

We also purchased a memory foam topper at Sam's Club for our King size RV bed and I think we paid about $100 and it is awesome and made all the difference in the world.

Your most welcome.
I wouldn't know about the mattress getting to warm. I sleep with an electric blanket year round. My husband hasn't complained about the mattress getting warm.He likes to sleep in a cool dark room, hence the electric binkie on my side of the bed. :)

The memory foam topper is much cheaper than purchasing a regular full size mattress.

We have a motorhome and purchased a Memory foam topper from Kohl's when they had the 50% off sale. It has really made our mattress comfortable! Since the slide comes in over the top of the mattress, we could only get the 2" thickness but they go up to 4 inches thick depending on your preferance. It was definately worth the money.

We purchased our memory foam from Costco and have one at home and one in the trailor. They are wonderful. Our trailer one seems to be better than the house memory foam. I think we paid about 150 in Saskatchewan.

I have a feather tick topper on the mattress in the 5th wheel. Under the mattress is an egg crate (the blue corregated foam) It sure has proved comfortable to us. The mattress in ours was extremely firm also. This makes it very comfy and not to hot in the summertime.

We purchased an inexpensive blow-up air bed and put it on top of the mattress in our RV. We loved it.

Sometimes Overstock.com has good prices on foam mattress pads.