Looking for firm back and body support while you sleep? Our extra firm mattress sets will give you all the support you need without feeling like you're sleeping on the floor. Today's firm mattresses have the built-in technology to support your body from head to toe while also conforming to your body's natural curvature and providing just enough "give" and a hint of softness for your sleeping comfort.

We have the best brands on the market at the best prices including a great selection of Sealy firm mattress sets including the Sealy posturepedic cushion firm mattress, as well as the Sealy medium firm mattress and the Sealy extra firm mattress.

Buy a firm mattress and rest assured knowing that you can exchange it with no questions asked to MattressDirectOnline.com with our 90-night comfort guarantee. We understand that buying a mattress is an important decision and we want you to be 100% satisfied with your purchase. Shop online and get a great price on a firm mattress.