Best Firm Mattress of 2024

Helix Dawn mattress: The Helix Dawn bed is a very supportive hybrid mattress that's as firm as firm beds can get, similar to Plank. Rated around a 9 to 10 on the firmness scale, it could be a great firm mattress pick for stomach or back sleepers under 230 pounds who want maximum support at an affordable price. I also like its general foam feel; it's similar to the foam in your favorite comfy couch. It's more breathable and more responsive to pressure than memory foam. 

GhostBed Flex Mattress: Rated a 6 to 7 out of 10 on the mattress firmness scale, the GhostBed is classified as a medium-firm mattress. It's made of a combination of latex-like memory foams that have a soft, springy feel, but also provide enough support so you don't feel like you're sinking into the mattress (and then waking up in pain). It also has two rows of reinforced coils around the edge of the bed that hold the layers up and contribute to excellent edge-to-edge firmness level support.

Read more: Best Mattress for Side Sleepers for 2023

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To test firm mattresses, we use our own instincts and pay close attention to how firm a bed feels. Particularly in comparison to other mattresses. We look for how the foam responds to our body, how far we sink into the bed and how supportive a bed feels in each sleeping position. If a bed presses strongly into our shoulders and hips while lying on our side, that's a good indicator that it's firm. 

Read more on how we test mattresses.

Sleeping position

Back and stomach sleepers are the types who usually sleep most comfortably on a firm mattress. Side sleepers typically like softer beds that offer pressure relief to the hips and shoulders. If you're a side sleeper, you may not want a firm bed. 

Weight 

The lighter you are, the firmer a mattress is going to feel. People under 150 pounds will likely perceive a medium-firm bed as firm. The opposite is true for heavier sleepers; the heavier you are, the softer a bed is going to feel. If a bed is rated around medium-firm and you weigh 245 pounds, it will likely feel closer to a medium instead. Keep this in mind when you're shopping for a bed so you choose the most suitable one. 

Firmness type

All firm beds aren't made to be the same. Beds that are considered firm land between six and 10 on the firmness scale. Beds rated around 6 to 8 are considered among the medium-firm range, while 8 to 10 is firm territory. Medium-firm beds offer both pressure relief and support, while firm beds offer maximum support.