An extra-firm mattress makes a difference in your alignment and sleep quality. Our picks for the best extra-firm mattresses include Plank Firm, Titan Plus and others.

But even if you don’t think you’re a firm ... mattresses, though this is by no means a universal decree. The amount and type of foam in a mattress greatly affects its firmness. Polyfoam ...

The MyGel Medium Memory Foam Mattress is made in the USA of high-quality materials and is designed to keep you cool. Browse more foam mattress deals at Mattress Firm. The Purple RejuvenatePlus is ...

Mini review: The best memory ... mattress offers the perfect firmness for weightless back sleeping. One of the comfiest foam mattresses we've tested – well worth it. Mini review: A firm and ...