Avoid buying a mattress online unless you have tested it in the store... I read the other reviews and thought I was getting a good firm mattress set. Very flimsy mattress that does not warrant the price tag. Not quite a sleeper sofa mattress but barely a step better in terms of density and overall support even with box spring. Back hurts after sleeping in it. Definitely no good for two people sleeping in same bed. AVOID THIS ONE AND CHOOSE ANOTHER IF YOU LIKE FIRM SUPPORT!!! Unfortunately non-returnable if not defective.