Firm vs. Medium vs. Soft: Which Mattress Suits You Best?
Gaurav Zatakia
Firm mattresses (8-10 on the firmness scale) suit back and stomach sleepers who need extra support. Medium-firm mattresses (5-7) work for most sleepers and combination sleepers. Soft mattresses (1-4) suit side sleepers and lighter body types.
Firm, medium, or soft: mattress firmness affects spinal alignment, pressure relief, and how rested you feel each morning. The right choice depends on your sleeping position, body weight, and any pain points, not a single "best" firmness for everyone. Here's how the three firmness levels compare, and how to pick the right one for you.
Soft Mattress vs Medium Mattress vs Firm Mattress
| Feature | Soft Mattress | Medium Mattress | Firm Mattress |
|---|---|---|---|
| Feel | Compresses easily, allowing the body to sink in more and creating a deeper, cushioned feel. | Strikes a balance between softness and firmness, offering both contouring and support. | Feels sturdy with minimal compression, keeping the body more on the surface rather than sinking in. |
| Support Level | Molds closely to the body, providing a softer feel but less structured support. | Offers a mix of comfort and stability, with moderate contouring while maintaining support. | Provides a solid and stable feel, keeping the sleeper lifted without much sinking. |
| Best Suited For | Works well for side sleepers and those with a lighter body frame. | Suitable for a wide range of sleepers, including those who change positions throughout the night. | Ideal for back sleepers and individuals with a heavier body weight who need extra support. |
| Pressure Relief | Provides strong relief by reducing pressure points, which may help with aches and pains. | Delivers moderate pressure relief while ensuring the body doesn't sink too much. | Offers minimal contouring but prevents excessive sinking and maintains proper posture. |
| Spinal Alignment | Can be beneficial for side sleepers but may not provide enough support for those on the heavier side. | Helps keep the spine properly aligned in most sleeping positions. | Designed to maintain spinal alignment, particularly for back sleepers and those needing extra support. |
| Firmness Rating | Generally falls within the softer range, around 4 to 5 on the firmness scale. | Typically rated between 5 and 7, offering a medium level of firmness. | Falls on the firmer end of the scale, usually rated 7 or higher. |
What Are the Different Levels of Mattress Firmness?
Picking the right mattress comes down to how firm or soft you want it to feel. Mattress firmness is rated on a scale from 1 to 10, with 1 being the softest and 10 being the firmest. Here's how that scale breaks down, from firmest to softest.
Firm Mattresses
These are mattresses that we might consider "hard" to the touch, or ones that don't have much give.
Firm mattresses offer strong support with very little sinkage. The surface feels solid and keeps the body well-supported throughout the night. If you don't like the feeling of sinking into the bed and prefer a sturdy sleeping surface, this option might be more comfortable.
Types of Firm Mattresses
Orthopedic Mattress: Designed for those with back pain or spinal issues, these mattresses provide firm support to keep the spine in a neutral position.
Innerspring Mattress: Uses coils for a sturdy and supportive structure. It offers a firm feel with minimal cushioning.
Ideal For
- People with back pain or spinal issues
- Back and stomach sleepers
- People who prefer a stable and supportive surface
- Those who experience discomfort on softer beds
- People with heavier body weight
Upgrade to a firm mattress that truly supports you. Try the Flo Orthopedic Mattress, rated 4.4 out of 5.
Order NowMedium-Firm Mattresses
One of the most popular choices, medium-firm mattresses offer a balance between softness and support. They provide enough firmness to keep your spine aligned while still having some cushioning for comfort. This is a great middle-ground option if you like a firm mattress but still want a little plushness.
Types of Medium-Firm Mattresses
Latex Mattress: Naturally supportive and slightly bouncy, without too much sinkage.
Hybrid Mattress: A mix of coils and foam or latex, offering both support and some cushioning.
Innerspring Medium-Firm Mattress: Similar to a traditional innerspring but with a slightly softer top layer.
Ideal For
- Back and combination sleepers who change positions at night
- People who want a mix of support and comfort
- Those who experience discomfort on very soft or very firm beds
Think a medium mattress is just right for you? Experience balanced comfort with the Flo Anti-Gravity™ Latex Mattress.
Order NowSoft Mattresses
There are also several levels of soft mattresses, each offering a different degree of cushioning.
Medium-Soft (4-5)
Balances softness and support. Still gentle, but provides better support than plush mattresses.
Soft / Plush (3-4)
Hugs the body with deep cushioning while still offering some stability underneath.
Extra Soft (1-2)
Deep sinkage, almost like a fluffy cloud. Cushioned and body-hugging, but offers less support.
Types of Soft Mattresses
Memory Foam Mattress: Adapts to the body's shape, relieving pressure and providing a hugging sensation.
Ideal For
- People who prefer a plush, contouring surface
- Side sleepers who prioritise comfort over firmness
- Lightweight sleepers who don't need much support
- People who enjoy a deeply cushioned feel
Thinking a soft mattress is what you need? Get the comfort you deserve with the Flo Ergo™ Memory Foam Mattress.
Shop NowHow to Determine If You Need a Firm, Medium or Soft Mattress
People often wonder whether a hard or soft mattress is better, but the answer depends on personal needs. There's no one-size-fits-all option since comfort, body type, and sleeping habits all play a role. Here are a few things to consider before deciding.
Comfort Matters Most
What feels comfortable for one person might not work for another. Think about your experience with your current mattress. If you wake up feeling well-rested and without body aches, the firmness level is likely right for you. But if you often wake up sore or uncomfortable, it might be time to switch to a different type of mattress.
Body Weight Impact
Weight and body size impact how a mattress feels. Heavier individuals often find soft mattresses uncomfortable because they sink too much, making it hard to get proper support. Lighter individuals may find firm mattresses too rigid and uncomfortable to sleep on. Finding the right balance is important for good sleep quality.
Sleeping Position and Support
How you sleep also determines whether a hard or soft mattress works better for you.
- Back sleepers need firm support to keep their spine aligned.
- Side sleepers usually prefer softer mattresses that adjust to the shape of their shoulders and hips.
- Stomach sleepers often need a firmer surface to prevent sinking and keep their body in a neutral position.
If you move a lot during sleep, a medium-firm mattress might be a better option since it provides a mix of support and comfort.
Common Mattress Firmness Myths
Myth: A firm mattress is always best for back pain
Fact: Back pain relief depends on spinal alignment, not firmness alone. Medium-firm or adaptive mattresses often support the spine better by relieving pressure points.
Myth: Soft mattresses don't provide enough support
Fact: Support comes from the mattress core, not how soft it feels on top. Many soft mattresses have strong support layers that keep the spine aligned.
Myth: The firmer the mattress, the better your posture
Fact: Overly firm mattresses can push the spine out of its natural curve. Proper posture needs balanced support that adapts to your body shape.
Myth: One firmness level suits everyone
Fact: Firmness needs vary based on body weight, sleep position, and comfort preference. What works for one person may cause discomfort for another.
Myth: Soft mattresses cause back problems over time
Fact: A soft mattress only causes issues if it lacks support. Well-designed soft mattresses can maintain alignment and reduce pressure-related pain.
Myth: If a mattress feels comfortable in the showroom, it's the right one
Fact: Short trials don't reflect real sleep conditions. Your body often needs several nights to adjust and reveal true comfort and support levels.
Myth: Firm mattresses last longer than soft ones
Fact: Durability depends on material quality, not firmness. High-quality soft mattresses can last just as long as firm ones without sagging.
Closing Thoughts
No matter what type of sleeper you are, the right mattress makes all the difference in getting quality rest. Whether you need extra support, a plush feel, or something in between, finding the right fit can improve comfort and sleep quality. Whatever your mattress needs might be, Flo always has you covered.
Whatever your firmness preference, Flo has a mattress built for it. Explore Ortho, Latex, and Memory Foam options today.
Explore Flo Mattress CollectionFrequently Asked Questions
Will a firm mattress get softer?
Yes, a firm mattress will soften over time. As you use it, the materials start to break in, making it feel less stiff. If the mattress has low-density foam, this can happen faster. High-quality materials like latex and strong coils take longer to soften but will eventually adjust to your body.
How do you know if your mattress is too firm?
If your mattress is too firm, your body will feel the difference. You might wake up with aches in your shoulders, hips, or lower back. It may also feel like you're sleeping on top of the mattress rather than sinking in slightly for support. If you keep tossing and turning at night, your mattress could be the reason.
How can you tell if a mattress is too soft?
A mattress that's too soft won't support your body properly. If you feel like you're sinking too much or struggling to change positions, it might be too soft. Waking up with back pain or stiffness can also be a sign. Over time, a mattress that's too soft can cause poor posture and discomfort.
When should you replace your mattress?
If your mattress is sagging, uneven, or causing discomfort, it might be time for a new one. Most mattresses last around 7 to 10 years, depending on the material and usage. If you wake up feeling sore or notice dips where you sleep, replacing it could improve your sleep quality.
Is a firmer mattress healthier for your spine?
No. A firmer mattress is not automatically healthier for the spine. What matters most is spinal alignment. For many sleepers, a medium-firm mattress offers proper support while allowing natural spinal curves, whereas very firm mattresses can cause pressure points and discomfort.
Why does a mattress feel different after a few weeks of use?
A mattress often feels different after a few weeks due to a normal break-in period. During this time, materials adjust to your body weight and sleeping posture, and your body adapts to the new support. This helps the mattress reach its actual comfort level.
Can mattress firmness affect sleep quality?
Yes. Mattress firmness directly affects sleep quality. An unsuitable firmness can lead to pressure build-up, discomfort, and frequent tossing and turning. When your body lacks proper support and comfort, it becomes harder to achieve deep, uninterrupted, and restorative sleep.
Is mattress firmness more important than mattress material?
Both are important, but firmness usually impacts comfort and spinal alignment more immediately. Mattress material influences how firmness feels, along with durability, temperature control, and pressure relief. Together, firmness and material determine overall sleep comfort and long-term mattress performance.
Does mattress firmness change with body weight?
Yes. Body weight plays a major role in how firm a mattress feels. Heavier sleepers compress the mattress more, making it feel softer, while lighter sleepers experience the same mattress as firmer. Choosing firmness should always consider individual body weight.
Can mattress firmness influence temperature while sleeping?
Yes. Mattress firmness can affect sleeping temperature. Softer mattresses that contour closely may trap more body heat, while firmer mattresses often allow better airflow. That said, materials like breathable foams or cooling layers also significantly influence heat regulation.
Is medium-firm a safe choice if you're unsure about firmness?
Yes. Medium-firm mattresses are generally the safest choice for most sleepers. They offer a balance of support and comfort, suit multiple sleeping positions, and work well for different body types. This makes them ideal if you're unsure about your preferred firmness level.
Should mattress firmness change as you age?
It can. As people age, joints become more sensitive and pressure relief becomes increasingly important. Many sleepers find that shifting from very firm mattresses to medium or medium-soft options improves comfort, reduces joint strain, and supports better sleep quality over time.
Can a mattress topper fix the wrong firmness?
A mattress topper can slightly adjust comfort, such as softening a mattress that feels too firm. However, it cannot fix poor support or structural problems. If the mattress lacks proper spinal support, a topper alone will not solve the issue.
Does mattress firmness affect joint pain?
Yes. Incorrect mattress firmness can increase stress on joints like the shoulders, hips, and knees. A mattress that balances support with pressure relief helps reduce joint pain by keeping the body aligned and minimising pressure on sensitive areas during sleep.
Is it normal to feel uncomfortable when switching mattress firmness?
Yes. Mild discomfort is normal when changing mattress firmness. Your body needs time to adapt to new support levels, especially when moving from very soft to firmer mattresses or vice versa. This adjustment period usually lasts a few weeks.