However, I have a question about mattresses. We are currently sleeping on a futon with a very thin mattress, so the wooden frame hurts both of our backs while we sleep. We were looking into mattress toppers, but the zip-up futon mattress cover is so tight around the mattress that a topper wouldn't fit inside it, and we don't want to sleep directly on a piece of foam or have to put a sheet over the whole thing to sleep.
I was wondering if there is such a thing as a foam pad that goes under a mattress instead, in between the wooden frame and the mattress, to give it a little more comfortable thickness? We can't seem to locate any, or what they would be called. Do you think for money saving we could get such a thing at a craft or hardware store and cut it to size ourselves?
Thank you for any advice on this! Any ideas I haven't thought of yet are welcome, too!
x-posted to domesticity.