Your sleeping position is one of the best places to start when choosing a mattress. Side, back and stomach sleepers put pressure on the mattress differently, so the same comfort level will not feel right to everyone.
The important word is start. Sleeping position can point you toward a firmness range, but it should not make the entire decision. Your body type, preferred feel, pressure sensitivity, partner and mattress construction all matter too.
For most shoppers, we recommend identifying your primary sleeping position first, then comparing two or three comfort levels in that range.
You can also browse Mattresses by size and available options before visiting a store.
The Quick Guide: Mattress Firmness by Sleeping Position
A simple starting point looks like this:
- Side sleepers: Start with plush to medium comfort.
- Back sleepers: Start with medium to firm comfort.
- Stomach sleepers: Start with medium-firm to firm comfort.
- Combination sleepers: Start near medium, then adjust based on the position you use most.
These are guidelines, not rules. A side sleeper who likes a firmer feel may prefer medium. A back sleeper with pressure sensitivity may prefer more cushioning. The goal is to keep your body supported without creating uncomfortable pressure points.
Best Mattress for Side Sleepers
Side sleepers usually need more cushioning around the shoulders and hips because those areas press more directly into the mattress. If the surface is too firm for your body, those pressure points may feel uncomfortable.
That is why plush and medium mattresses are common starting points for side sleepers. The comfort layers can allow the shoulder and hip to settle into the mattress while the support system underneath helps keep the body from sinking too far.
If you are a side sleeper, pay attention to:
- Pressure relief around shoulders and hips
- Enough support to keep your midsection from sinking excessively
- A pillow height that keeps your head and neck in a comfortable position
- Whether you prefer the contouring feel of foam or a more responsive mattress feel
A mattress does not have to feel extremely soft to work for a side sleeper. The right amount of cushioning depends on the sleeper.
Best Mattress for Back Sleepers
Back sleepers generally need a balance of cushioning and support. The mattress should allow some contouring while keeping the body from sinking too deeply through the middle.
Medium and firm mattresses are good places to begin. A medium feel can provide more cushioning, while a firmer surface may appeal to sleepers who prefer a flatter, more supportive feel.
When testing a mattress on your back, notice whether your hips feel supported and whether your lower back feels comfortable. If you feel like your middle is dropping much lower than the rest of your body, try a firmer option. If the mattress feels hard against your body, try one step softer.
Best Mattress for Stomach Sleepers
Stomach sleepers often prefer a more supportive surface because too much sink through the hips can create an uncomfortable sleeping position. Medium-firm and firm mattresses are common starting points.
The goal is not to find the hardest mattress in the store. It is to find enough support that your midsection does not sink excessively while still choosing a surface you can comfortably sleep on all night.
Pillow choice matters here too. A thick pillow can change the angle of the head and neck for a stomach sleeper, so evaluate the mattress and pillow together when possible.
Best Mattress for Combination Sleepers
If you regularly move between your side, back and stomach, a medium mattress is often a useful place to start. It sits between the softer cushioning many side sleepers enjoy and the firmer support many back and stomach sleepers prefer.
Think about which position you spend the most time in. If you fall asleep on your side and wake up on your back, medium may be a good middle ground. If you spend most of the night on your stomach, moving slightly firmer may make more sense.
Combination sleepers may also prefer a mattress that makes it easy to change positions rather than one that creates a very deep, slow-sinking feel.
Plush, Medium and Firm: What Do Those Words Mean?
Mattress firmness describes how soft or firm the sleeping surface feels. It is not the same thing as quality or support. A well-designed plush mattress can still provide support, and a firm mattress can still include comfort layers.
Plush
Plush mattresses have more noticeable cushioning and give at the surface. They are often a starting point for side sleepers and shoppers who like a softer feel.
Medium
Medium mattresses balance cushioning and firmness. They are popular with combination sleepers, couples with different preferences and shoppers who are unsure where to begin.
Firm
Firm mattresses have less surface give and a more supportive feel. They are common starting points for back and stomach sleepers or anyone who simply prefers a firmer sleep surface.
Want a deeper comparison? Read Plush vs. Firm Mattress: What’s the Difference?.
Your Body Type Can Change How Firmness Feels
Firmness is subjective because sleepers put different amounts of pressure on the mattress. The same mattress can feel firmer to one person and softer to another.
That is another reason sleeping-position charts should be treated as starting points. If a recommended firmness does not feel comfortable to you, move up or down. Your actual comfort matters more than matching a label.
Couples Should Consider Both Sleepers
Two people may have different sleeping positions and firmness preferences. If one person sleeps on their side and the other sleeps on their back, medium can be a practical starting point, but it is not the only answer.
When possible, both people should test the mattress. Pay attention to how easily you can change positions, how much movement you feel from the other side and whether both sleepers feel supported.
Mattress Type Matters Too
Firmness is only one part of how a mattress feels. Construction also changes the experience. Foam mattresses may provide more contouring. Innerspring and hybrid designs may feel more responsive, depending on the model and comfort layers.
Do not assume that every foam mattress is soft or every spring mattress is firm. Compare the stated comfort level and try the mattress when possible.
Do You Need a Box Spring or Foundation?
The correct support under your mattress matters. Some mattresses are designed for a foundation, platform, adjustable base or another approved support system. Using the wrong setup can affect comfort and may conflict with manufacturer requirements.
Check the requirements for the mattress you are considering, and read Do You Need a Box Spring? Mattress Foundations Explained for a closer look at foundations and bases.
How to Test a Mattress in a Store
A quick sit on the edge will not tell you much about how a mattress sleeps. If you are shopping in person, spend a few minutes in the position you actually use at night.
- Lay down in your normal sleeping position.
- Give the mattress enough time to feel how your shoulders, hips and midsection settle.
- Try one firmness level softer and one firmer when possible.
- Roll into another position to see how easy it is to move.
- If you share the bed, test it together.
You are not trying to predict eight hours of sleep in five minutes. You are looking for obvious pressure, excessive sinking or a feel you already know you dislike.
Use our Store Locator to find an American Freight near you.
Do Not Forget Mattress Size
The right firmness does not help much if the bed is too small for the sleeper or the room. Measure the bedroom and think about who will use the mattress.
A Queen is a common choice for couples and primary bedrooms, while a King provides additional width when the room can accommodate it. Twin and Full sizes can work well in kids’ rooms, guest rooms and smaller spaces. Always check the exact product dimensions before buying.
Our Recommendation: Start With Position, Finish With Comfort
Sleeping position gives you a useful shortcut. Side sleepers can start softer. Back and stomach sleepers can start firmer. Combination sleepers can begin in the middle.
Then trust how the mattress actually feels. Compare nearby firmness levels, consider your body type and partner, and make sure the mattress has the correct support underneath it. There is no prize for choosing the “correct” firmness on a chart if you do not find it comfortable.
Browse Mattresses online or visit your local store to compare comfort levels. Flexible payment options are available. Learn more about financing.
Frequently Asked Questions
What mattress firmness is best for side sleepers?
Plush to medium is a common starting range because side sleepers often benefit from more cushioning around the shoulders and hips. Personal preference and body type can move you softer or firmer.
What mattress firmness is best for back sleepers?
Medium to firm is a useful starting range for many back sleepers. Look for a balance of cushioning and support that keeps the middle of your body from sinking excessively.
What mattress firmness is best for stomach sleepers?
Medium-firm to firm is a common starting point because stomach sleepers often prefer more support through the midsection. Comfort still matters, so the firmest mattress is not automatically the best choice.
What is the best mattress for combination sleepers?
Medium is often a good place to begin because it balances cushioning and support across several positions. If you spend most of the night in one position, adjust softer or firmer based on that position.
Is a firm mattress always better for back pain?
No single firmness is right for everyone. Comfort and support needs vary by person. If pain is persistent or related to a medical condition, talk with a qualified healthcare professional about your individual needs.
Should couples choose a medium mattress?
Medium can be a useful compromise when two sleepers have different preferences, but it is not automatically the best choice. Both people should compare comfort and support when possible.
