Best firm mattress for bad backs?

Question

Bought a cheap(er) memory foam mattress from Sam's a year and a half ago and it no longer gives support. (It may be because only the top 3 inches or so are memory foam and the rest is regular foam.)

Answer 1

Memory foam mattress are good for bad backs as they are not too soft or too hard. The memory foam supports your body and distributes your body weight evenly.

If you are on a budget, I would suggest you to buy a memory foam mattress topper instead of a memory foam mattress. You should also read reviews about different brands to get a better idea of which one suits you. http://www.memoryfoammattress101.com has more information on memory foam mattress