Best Firm Mattress

 

Most mattress companies and users will describe how soft a particular mattress is. They’ll say it’s like sleeping on a cloud. For certain sleepers, however, that couldn’t sound less appealin...g. This is because firmness is often the most critical aspect of a mattress. The best firm mattress will align your spine, relieve pressure on your muscles, a firm mattress also keeps your lower back from collapsing. In this firm mattress buying guide, we detail what you need to know when searching for the best firm mattress and a selection of what we believe to be the 5 top firm mattresses in the UK. Read on!

BEST 2021
PROS
CONS
OUR VERDICT
Type
Firmness
Features
Packing
Colour
Certification
Weight
Warranty
 
PROS

Uses the innovative Miracoil system, which is reactive to the curves of your body. Broken into 3 distinct comfort zones to maximize comfort efficiency. Altered zones allow for spinal alignment. Sturdy, coils are dense and will not lose shape. The density of coils eliminates motion transfer. Hypoallergenic. Eco-friendly.

CONS

Might be too firm, requiring an extra gel pad. Coils are not individually wrapped.

OUR VERDICT

Good 3-zone mattress, perfect for people who prefer it a little extra firm. Silentnight is an eco-friendly company and trusted brand with great service if you experience any issues.

Type

Silentnight Orthopaedic Mattress

Firmness

Firm

Features

Hypoallergenic and dust mite resistant make it ideal for asthma and allergy sufferers.

Packing

Full size mattress

Colour

White

Certification

Made in the UK, as per UK standards

Weight

30 Kg

Warranty

5 Years

PROS

Memory foam is ideal for catching and contouring to your body. Uses Reflex Foam which pushes up against you, sparing you of the sinking feeling some memory foams produce. No roll feature, keeping you and your spine in place. Gel foam designed by NASA. The cover is sanitized and easy to remove. Heat controlled.

CONS

A 16cm, it’s a little thin compared to other beds. You might need to purchase a box spring or extra layer to raise the layers.

OUR VERDICT

Excellent memory foam option for the firm lover. Will bounce back against your body giving you the best of both worlds. Happy Beds is a trustworthy Feefo five star service company.

Type

Orthopaedic Mattress

Firmness

Firm

Features

Hypoallergenic, anti-dust mite and No Roll features.

Packing

Delivered vacuum packed and rolled

Colour

White

Certification

Made in the UK, as per UK standards

Weight

21 Kg

Warranty

5 Years

PROS

High-quality product at a steal of a price. The mattress is custom tufted to naturally support your weight. Uses advanced Bonnell coil spring system to align your spine. Breathable cotton cover that reduces heat retention.

CONS

Not quite as firm as the other mattresses on the list if that is a must. Coils are not individually wrapped. Possibly prone to motion transfer.

OUR VERDICT

The mattress for people who don’t want it too soft, but not too firm, this one is just right. Incredible value for the price.

Type

Pocket Sprung Mattress

Firmness

Firm

Features

Non allergenic polyester filling

Packing

Full size mattress

Colour

Beige

Certification

Made in the UK, as per UK standards

Weight

29 Kg

Warranty

1 Year

PROS

Sleeps as well as any hotel bed. The company is known for their innovative filling. Uses zero gravity reflex foam, a recommendation of chiropractors for better back health. Contours and supports your shape. Extremely breathable and offers optimal heat retention. Combination of firm and foam offers unmatched support and weight distribution. Won’t sag over time. No rolling or sloping. Hypoallergenic.

CONS

Size is lower than advertised.

OUR VERDICT

Perfect breathable firm foam mattress for any sleep type. Superior heat and moisture retention.

Type

Reflex Foam Mattress – Orthopaedic

Firmness

Firm

Features

Temperature-Control; Hypoallergenic

Packing

Rolled and vacuum packed

Colour

White

Certification

Made in the UK, as per UK standards

Weight

12.5 Kg

Warranty

1 Year

PROS

Incredibly engineered bed. Good level of firmness. Uses both latex and memory foam. Uses gel foam to disperse any extra heat. Latex is aerated and allows optimal oxygen flow. Catches and contours to your body and supports for a deep rest. The cover is plush and stretchable.

CONS

Little more expensive than the other options. Not available to try in stores.

OUR VERDICT

Possibly the best medium firm mattress on the market right now. Heat retention that can not be beaten. An expertly crafted mattress that covers every comfort.

Type

Gel Memory Foam Mattress

Firmness

Firm

Features

Reduces Pressure, Regulates Sleeping Temperature

Packing

Vacuum-sealed in a compact box

Colour

Black and white

Certification

Made in the UK, as per UK standards

Weight

26.8 Kg

Warranty

20 Years

 
Silentnight Miracoil Ortho Firm Mattress
Happy Beds 250 Orthopaedic Memory Foam Firm Mattress
Hf4You 10 Inch Deep Regal Firm Orthopaedic Mattress
Reflex Foam Orthopaedic Firm Mattress
Ghostbed 27cm Cooling Gel Memory Foam Firm Mattress

Top 5 Firm Mattress Guide & Reviews

1. Silentnight Miracoil Ortho Firm Mattress

The Silentnight Bexley Miracoil Orthopaedic Firm Mattress is designed with the firm mattress sleeper in mind. It utilizes a signature Miracoil reactive spring system which is unlike any traditional spring system. It uses twice the amount of springs for extra support. These gather together and strengthen at the edges. The closeness of the springs traps extraneous motion transfer, sparing your partner from waking up in the middle of the night.

The coils are broken into 3 zones, 2 soft zones for your legs and head, and 1 zone firm zone in the middle for your lower back and hips relief. These altered zones allow for superior spinal alignment. The firm and sturdy Miracoil system is also the perfect support for layering foam or gel pads for those who prefer a softer feel.

At 70 years of age, Silentnight is easily one of the UK’s most trusted mattress brands. You can rely on them for quality products and services. In fact, for the past 13 years, they have been recognized as a UK “Superbrand”. The Silentnight Bexley is made in the UK from recycled and reused products to help reduce their carbon footprint. The eco comfort layer is fully recyclable and refreshingly breathable. Its thin fibres have been intelligently designed to allow air to pass through and invigorate your cells while you sleep. It’s covered in a luxurious damask cover that is finished with an attractive tuft system for a final amount of comfort. Read user reviews for the Silent Bexley mattress on Amazon! 

The edge-to-edge Miracoil system allows for a maximum amount of sleep space. The quality of them will ensure your bed never needs to be turned over or rotated; these springs are built to last. The pure density of them allows for almost zero movements to move across space, eliminating motion transfer. Best of all, these coils will work to contour your body into perfect shape. The spring system will seek out different points of your body and release pressure while you sleep. Your back and spine will have the ideal amount of resistance to align them. You will feel an equilibrium from head to toe when you lie down. Finally, the mattress is hypoallergenic. It is designed to resist dust mites. Those suffering from allergies or asthma will find a perfect home in the Silentnight Bexley. The mattress is single sided and stands 24cm high.

2. Happy Beds 250 Orthopaedic Memory Foam Firm Mattress

Just because a mattress is firm, doesn’t mean it can’t be made out of memory foam. This combination often gives the best of both worlds. The memory foam catches and contours to you, but the bouncy firmness keeps you from sinking into the “hammock” feeling. Anyone who has slept in a hammock knows the damage it will cause to your back.

Here comes the Happy Beds 250 Orthopaedic Memory Foam Firm Mattress to save the day. The bed stands 16cm high and is highlighted by a 20 mm thick memory foam layer which follows the shape of your body and supports it. Below that is the reflex foam to provide extra support. It also is breathable and will eliminate any excess body heat that would otherwise get stuck inside the mattress. Any time each is retained inside a mattress, you are liable to wake up in a sweat and lose out on precious REM sleep. Even though it’s already a foam mattress, adding a layer of foam or gel to it will compliment the foam nicely. The actual foam used is viscoelastic polymer gel memory foam, which was designed by NASA to keep their astronauts operating at 100%. It contours to your exact body shape and presses back against it, alleviating pressure. The orthopaedic construction of the mattress will balance and distribute your weight with ease. The mattress is hypoallergenic and features anti-dust mite technology. The fabric of the cover is sanitized and delivered clean. Plus, it is removable for easy dry cleaning.

Happy Beds is a UK-based company that manufactures all its beds inside Britain. The company has a five-star Feefo service rating, and all their products come with a 5-year guarantee. This firm mattress is National Bed Foundation approved. As with all Happy Beds, the product is 100% fire retardant and uses quality materials. The greatest selling point of this best firm mattress is the no-roll feature, which keeps you in position throughout the night. Tossing and during sleep causes you to break from your REM cycle. Instead, with the Happy Bed Memory 250, you will remain sleeping in optimal alignment.

3. Hf4You 10 Inch Deep Regal Firm Orthopaedic Mattress

Home Furnishings is a UK company that specializes in making quality products for a great price, which is what they’ve done with the Hf4You 10 Inch Deep Regal Firm Orthopaedic Mattress. The mattress is medium-firm and uses an advanced 12.5g open coil spring system. The springs work to settle your weight and then push back up against your shape. This keeps you suspended in ideal spinal alignment for sleep.

The firm mattress is custom tuft topped. Tufting is when the mattress cover is brought down and attached to a button. These grooves and holes in the bed act as natural support systems to better distribute your weight. Together with the coils, the mattress contours your weight and spreads it evenly. This saves you from waking up with sore joints. The robust coil support works to safely align your spine and keep it in the optimal position while you sleep. The mattress is approximately 25cm deep and will work well with a box spring mattress for extra firmness. The overall feel is perfect for people who prefer a firm bed, but still want a little bit of that sinking into a cloud feeling. “Just right” as Goldilocks would say.

This best firm mattress is hypoallergenic and is resistant to dust mites. Anyone with allergies can rest assured, knowing the mattress actively works against dust collection. The actual cover itself is luxurious, breathable cotton, which will allow airflow and reduce heat retention. Because of the super-strong Bonnell spring system, the mattress is guaranteed not to lose its shape over time as most mattresses will. This will help you maintain the correct posture while you sleep. Getting this added protection will not only improve your nights, but your days as well since you will be feeling more refreshed than ever.

4. Reflex Foam Orthopaedic Firm Mattress

Starlight Beds is another mattress company in the UK. They are known to use high-quality materials and innovative fillings to custom tailor comfort. They are a constant supplier of mattresses for many UK hotel chains. Is there anything more comfortable than a hotel mattress? Now you can take that comfort home with you with their revolutionary Reflex Foam Orthopaedic Firm Mattress.

This mattress utilizes zero gravity reflex foam, which is made in the UK. The foam is recommended by chiropractors as well as general practitioners. The elastic ability of the reflex foam allows it to contour to your body, but also push up to your shape. This will relieve pressure points across your body, making you refreshed and energetic in the morning. The mattress is 15cm of various foam layers that fit together for that perfect medium-firm foam feel. The combination of firm and foam provides unmatched support and weight distribution. The bed is also specially designed to prevent roll-off and will prevent the bed from sloping inwards.

The mattress has been put through rigorous tests to ensure that it will not lose shape or sage over time. It is covered a luxurious cotton-blend removal that is easily washed. The entire mattress is hypoallergenic, so it is ideal for those with allergies. Often dust mites will be attracted to the linings of mattresses, but this one is specially designed to resists dust and bacteria.

The mattress is also extremely breathable, offering optimal heat retention. Too often, memory foam mattresses will trap heat that is leaving your body. This heat will accumulate around you, causing you to sweat, toss, and turn. With the Reflex Foam Firm Mattress, the ergonomic design allows air to flow freely through, dispersing the heat and providing valuable oxygen to your body for cell regeneration.

5. Ghostbed 27cm Cooling Gel Memory Foam Firm Mattress

Ghostbed is one of the new internet companies that put all their resources into making one exceptional mattress. Rather than spread their tricks and insight over tens to hundreds of mattresses, Ghostbed pulls out all the bells and whistles for their cooling gel memory foam mattress.

The Ghostbed 27cm Cooling Gel Memory Foam Firm Mattress is the perfect amount of firm, about 6.5/10 on a scale. It offers the ideal balance of comfort and support. It all begins with a luxurious plush cover made from a blend of viscose and polyester for stretchability and a plush feel. The cover is cross-stitched for breathability and easily removed. Then there is 3 cm of premium aerated latex foam. Latex is a unique foam that often contours and supports your body better than memory foam or traditional coils. It responds correctly to your weight and feels plush to the touch. It is also naturally resistant to heat.

Below that is a 5cm layer of gel memory foam. If you thought the latex prevented heat retention, buckle up. Ghostbed uses a proprietary formula with unusually large cells to the foam more reactive to your body heat. Any extraneous heat will be promptly dispersed, and you will be free to continue your REM sleep cycle. Then there is the 18cm high-density base. While the latex and memory foam works to soften your body into a dreamy suspension, the high-density base will push up and support your body. This will relieve pressure points and evenly distribute your weight, so your joints, neck, and back are pain-free the next day. The base also adds to the longevity of the mattress by providing a sturdy sag-free core.

The mattress is 27cm high in total. The removable plush cover is specially designed to wick away extra moisture. Moisture, like heat, builds over time in lesser mattresses and robs you of REM sleep by waking you up in the middle of your cycle. This will not be a problem for the GhostBed, which eliminates the extra moisture in the air and away from you. Combined with its ability to regulate sleep temperature, you are sure to rest undisturbed. The different memory foams used also protect against motion transfer. The mattress is specially designed to be hypoallergenic. It is dust-mite resistant cover will keep you from coughing the night away. GhostBed is an expert in mattress innovation and has over 15 years of experience that has led to the construction of this mattress. It is best suited on top of a flat surface such as a platform bed, box spring, or wood foundation.

Silentnight Miracoil Ortho Firm Mattress

Silentnight Miracoil Ortho Firm Mattress

The Silentnight Bexley Miracoil Orthopaedic Firm Mattress is designed with the firm mattress sleeper in mind. It utilizes a signature Miracoil reactive spring system which is unlike any traditional spring system. It uses twice the amount of springs for extra support. These gather together and strengthen at the edges. The closeness of the springs traps extraneous motion transfer, sparing your partner from waking up in the middle of the night.

The coils are broken into 3 zones, 2 soft zones for your legs and head, and 1 zone firm zone in the middle for your lower back and hips relief. These altered zones allow for superior spinal alignment. The firm and sturdy Miracoil system is also the perfect support for layering foam or gel pads for those who prefer a softer feel.

At 70 years of age, Silentnight is easily one of the UK’s most trusted mattress brands. You can rely on them for quality products and services. In fact, for the past 13 years, they have been recognized as a UK “Superbrand”. The Silentnight Bexley is made in the UK from recycled and reused products to help reduce their carbon footprint. The eco comfort layer is fully recyclable and refreshingly breathable. Its thin fibres have been intelligently designed to allow air to pass through and invigorate your cells while you sleep. It’s covered in a luxurious damask cover that is finished with an attractive tuft system for a final amount of comfort. Read user reviews for the Silent Bexley mattress on Amazon! 

The edge-to-edge Miracoil system allows for a maximum amount of sleep space. The quality of them will ensure your bed never needs to be turned over or rotated; these springs are built to last. The pure density of them allows for almost zero movements to move across space, eliminating motion transfer. Best of all, these coils will work to contour your body into perfect shape. The spring system will seek out different points of your body and release pressure while you sleep. Your back and spine will have the ideal amount of resistance to align them. You will feel an equilibrium from head to toe when you lie down. Finally, the mattress is hypoallergenic. It is designed to resist dust mites. Those suffering from allergies or asthma will find a perfect home in the Silentnight Bexley. The mattress is single sided and stands 24cm high.

Happy Beds 250 Orthopaedic Memory Foam Firm Mattress

Happy Beds 250 Orthopaedic Memory Foam Firm Mattress

Just because a mattress is firm, doesn’t mean it can’t be made out of memory foam. This combination often gives the best of both worlds. The memory foam catches and contours to you, but the bouncy firmness keeps you from sinking into the “hammock” feeling. Anyone who has slept in a hammock knows the damage it will cause to your back.

Here comes the Happy Beds 250 Orthopaedic Memory Foam Firm Mattress to save the day. The bed stands 16cm high and is highlighted by a 20 mm thick memory foam layer which follows the shape of your body and supports it. Below that is the reflex foam to provide extra support. It also is breathable and will eliminate any excess body heat that would otherwise get stuck inside the mattress. Any time each is retained inside a mattress, you are liable to wake up in a sweat and lose out on precious REM sleep. Even though it’s already a foam mattress, adding a layer of foam or gel to it will compliment the foam nicely. The actual foam used is viscoelastic polymer gel memory foam, which was designed by NASA to keep their astronauts operating at 100%. It contours to your exact body shape and presses back against it, alleviating pressure. The orthopaedic construction of the mattress will balance and distribute your weight with ease. The mattress is hypoallergenic and features anti-dust mite technology. The fabric of the cover is sanitized and delivered clean. Plus, it is removable for easy dry cleaning.

Happy Beds is a UK-based company that manufactures all its beds inside Britain. The company has a five-star Feefo service rating, and all their products come with a 5-year guarantee. This firm mattress is National Bed Foundation approved. As with all Happy Beds, the product is 100% fire retardant and uses quality materials. The greatest selling point of this best firm mattress is the no-roll feature, which keeps you in position throughout the night. Tossing and during sleep causes you to break from your REM cycle. Instead, with the Happy Bed Memory 250, you will remain sleeping in optimal alignment.

Hf4You 10 Inch Deep Regal Firm Orthopaedic Mattress

Hf4You 10 Inch Deep Regal Firm Orthopaedic Mattress

Home Furnishings is a UK company that specializes in making quality products for a great price, which is what they’ve done with the Hf4You 10 Inch Deep Regal Firm Orthopaedic Mattress. The mattress is medium-firm and uses an advanced 12.5g open coil spring system. The springs work to settle your weight and then push back up against your shape. This keeps you suspended in ideal spinal alignment for sleep.

The firm mattress is custom tuft topped. Tufting is when the mattress cover is brought down and attached to a button. These grooves and holes in the bed act as natural support systems to better distribute your weight. Together with the coils, the mattress contours your weight and spreads it evenly. This saves you from waking up with sore joints. The robust coil support works to safely align your spine and keep it in the optimal position while you sleep. The mattress is approximately 25cm deep and will work well with a box spring mattress for extra firmness. The overall feel is perfect for people who prefer a firm bed, but still want a little bit of that sinking into a cloud feeling. “Just right” as Goldilocks would say.

This best firm mattress is hypoallergenic and is resistant to dust mites. Anyone with allergies can rest assured, knowing the mattress actively works against dust collection. The actual cover itself is luxurious, breathable cotton, which will allow airflow and reduce heat retention. Because of the super-strong Bonnell spring system, the mattress is guaranteed not to lose its shape over time as most mattresses will. This will help you maintain the correct posture while you sleep. Getting this added protection will not only improve your nights, but your days as well since you will be feeling more refreshed than ever.

Reflex Foam Orthopaedic Firm Mattress

Reflex Foam Orthopaedic Firm Mattress

Starlight Beds is another mattress company in the UK. They are known to use high-quality materials and innovative fillings to custom tailor comfort. They are a constant supplier of mattresses for many UK hotel chains. Is there anything more comfortable than a hotel mattress? Now you can take that comfort home with you with their revolutionary Reflex Foam Orthopaedic Firm Mattress.

This mattress utilizes zero gravity reflex foam, which is made in the UK. The foam is recommended by chiropractors as well as general practitioners. The elastic ability of the reflex foam allows it to contour to your body, but also push up to your shape. This will relieve pressure points across your body, making you refreshed and energetic in the morning. The mattress is 15cm of various foam layers that fit together for that perfect medium-firm foam feel. The combination of firm and foam provides unmatched support and weight distribution. The bed is also specially designed to prevent roll-off and will prevent the bed from sloping inwards.

The mattress has been put through rigorous tests to ensure that it will not lose shape or sage over time. It is covered a luxurious cotton-blend removal that is easily washed. The entire mattress is hypoallergenic, so it is ideal for those with allergies. Often dust mites will be attracted to the linings of mattresses, but this one is specially designed to resists dust and bacteria.

The mattress is also extremely breathable, offering optimal heat retention. Too often, memory foam mattresses will trap heat that is leaving your body. This heat will accumulate around you, causing you to sweat, toss, and turn. With the Reflex Foam Firm Mattress, the ergonomic design allows air to flow freely through, dispersing the heat and providing valuable oxygen to your body for cell regeneration.

Ghostbed 27cm Cooling Gel Memory Foam Firm Mattress

Ghostbed 27cm Cooling Gel Memory Foam Firm Mattress

Ghostbed is one of the new internet companies that put all their resources into making one exceptional mattress. Rather than spread their tricks and insight over tens to hundreds of mattresses, Ghostbed pulls out all the bells and whistles for their cooling gel memory foam mattress.

The Ghostbed 27cm Cooling Gel Memory Foam Firm Mattress is the perfect amount of firm, about 6.5/10 on a scale. It offers the ideal balance of comfort and support. It all begins with a luxurious plush cover made from a blend of viscose and polyester for stretchability and a plush feel. The cover is cross-stitched for breathability and easily removed. Then there is 3 cm of premium aerated latex foam. Latex is a unique foam that often contours and supports your body better than memory foam or traditional coils. It responds correctly to your weight and feels plush to the touch. It is also naturally resistant to heat.

Below that is a 5cm layer of gel memory foam. If you thought the latex prevented heat retention, buckle up. Ghostbed uses a proprietary formula with unusually large cells to the foam more reactive to your body heat. Any extraneous heat will be promptly dispersed, and you will be free to continue your REM sleep cycle. Then there is the 18cm high-density base. While the latex and memory foam works to soften your body into a dreamy suspension, the high-density base will push up and support your body. This will relieve pressure points and evenly distribute your weight, so your joints, neck, and back are pain-free the next day. The base also adds to the longevity of the mattress by providing a sturdy sag-free core.

The mattress is 27cm high in total. The removable plush cover is specially designed to wick away extra moisture. Moisture, like heat, builds over time in lesser mattresses and robs you of REM sleep by waking you up in the middle of your cycle. This will not be a problem for the GhostBed, which eliminates the extra moisture in the air and away from you. Combined with its ability to regulate sleep temperature, you are sure to rest undisturbed. The different memory foams used also protect against motion transfer. The mattress is specially designed to be hypoallergenic. It is dust-mite resistant cover will keep you from coughing the night away. GhostBed is an expert in mattress innovation and has over 15 years of experience that has led to the construction of this mattress. It is best suited on top of a flat surface such as a platform bed, box spring, or wood foundation.

Your Firm Mattress Buying Guide in the UK

The following guide is a collection of insights paired with the best mattress reviews to give you the best firm mattress for the best price. Mattress preference will vary from person to person, but certain companies and products have stood above the rest. With over 10 years of mattress selling experience, allow me to break down reasons to consider the best firm mattress and my favorite 5 firm mattress models.

Reasons to Buy a Firm Mattress

In the past, the “firm” mattress feeling was created by putting an extra hard inner coil mattress on a tough box spring. Firmness, however, is not necessarily how hard the mattress presses against you; it is instead of how thoroughly the mattress transfers your weight. This is known as the Indentation Load Deflection (ILD). A typical ILD will be between 24 and 31. A higher ILD does not mean a better mattress; it is just a matter of preference. Instead, here is what constitutes a superior firm mattress.

Surprisingly Comfortable

Comfort is often the most immediate desire of a mattress buyer. What they might not know is that comfort is not driven by softness, but rather the essential characteristic of a mattress, support. A firm mattress with a high ILD will provide you with the comfort superior to softer mattresses.

Spinal Alignment

The absolute worst thing you can do is damage your spine sleeping on a sub-par mattress. The best firm mattress will maintain and hold shape to keep your back, neck, and joints in the proper place. This gives them the rest they need to function the next day properly.

Superior Weight Distribution

Firm mattresses often distribute and support your weight better than medium and soft alternatives. The bouncy nature of the mattress reduces the pressure your body endures throughout the night, allowing your blood to flow more easily through your system. You will also be able to inhale more oxygen, which maintains your core and back while you sleep.

Eliminates Movement Transfer

When sleeping, the goal is to enter into your REM sleep cycle. Whenever you are disturbed in your sleep by your partner or perhaps the pet, you break and have to restart the process. Firm mattresses reduce the motion that can transfer through the mattress, ensuring that you won’t be disturbed should your sleeping partner have a restless sleep.

Lasts Longer

One of the most important aspects of a mattress is that it maintains its structure. Over time, mattresses of poor quality tend to sag, forcing your body into awkward positions. The dense nature of a firm mattress allows it to maintain integrity for a long time, giving you more profound sleep.

Cell Regeneration

While you sleep, your body is regenerating and restoring parts of your body that were battered throughout the day. If you are not getting into a deep sleep state, your cells can’t restore themselves. Choosing the right firm mattress will give you a deep sleep to recover for tomorrow.

Versatility

It’s smart to buy a firm mattress because you can always add layers to soften it. It is impossible to make a soft mattress firm, but gel and foam layers can be added to any firm mattress to soften if desired.