The Future of Sleep: The Negative Space Mattress

The Future of Sleep: The Negative Space Mattress

It's no secret that the mattress industry is a multibillion-dollar business. But with all the options out there, which one should you choose for a good night's sleep? You can buy anything from sleep trackers to white noise machines and everything in between to help improve your sleep, but if you're looking for something truly innovative that makes for better sleep, it might be time to skip the latest foam mattress topper. 

Instead, get ready to meet your future sleep surface: the Negative Space Mattress. 

The Negative Space Mattress is a groundbreaking new design in the sleep industry. Just imagine a memory foam mattress that is comfortable, airy, and soft — just like a cloud. 

Let's go over why the Negative Space Mattress from SONU is a sleep marvel and how it can support deep, restful sleep in ways that traditional mattresses simply can't.

What Is a Negative Space Mattress?

Forget memory foam and latex-based mattresses. The Negative Space Mattress is a revolutionary innovation in the world of sleep technology that has an edge above the rest. Designed with side sleepers in mind, this mattress is a game-changer for anyone who struggles to get comfortable at night.

This innovative new mattress is designed to promote better sleep by using the power of negative space. This unique design allows for greater airflow and ventilation that a standard bed doesn't offer. Negative space mattresses can help keep you cool and comfortable throughout the night, promoting the restful sleep you need. 

The only Negative Space Mattress out there is the SONU Sleep System. We refer to the SONU as a Negative Space Mattress due to its innovative design, which features a channel for a side sleeper's weight-bearing arm.

Let's take a look at how the Negative Space Mattress works.

How Does the Negative Space Mattress Work?

If you are looking for a new way to improve your sleep quality, a comprehensive system that makes use of a brand new mattress design is exactly what you need. 

SONU Sleep's Negative Space Mattress features several one-of-a-kind features: the Support Pillows, the Comfort Channel, and the Cooling Topper.

Let's go over what each of the layers of the SONU Sleep System can offer:

The Comfort Channel

The Comfort Channel allows for the full range of motion of the shoulders and arms so they can rest within the mattress, not just on top. Side-sleepers may benefit from not needing to roll over in the middle of the night to constantly relieve pressure on their arms and shoulders. 

This relief can result in restful sleep throughout the night. 

The Comfort Channel's 10 inches deep negative space was crafted to help support the sleeper's upper torso while relieving any pressure on their limbs.

The Support Pillows

Each SONU Sleep System has two layers of Support Pillows, which totals to four pillows for the King and Queen-size sets, and two for Twin XL set. Within each Support Pillow are numerous layers stacked on top of each other for ultimate comfort. This feature was specially crafted to keep your pillows laterally malleable while maintaining ideal vertical support. 

The Support Pillows are designed for a head pillow to be placed on top of them for full head support, while allowing room in the Comfort Channel for a sleeper's limbs.

Sink-In Support

The SONU Sleep System is designed to help align your spine while reducing tension, keeping you comfortable throughout the night. That extra support for your spine helps you wake up feeling more refreshed and rejuvenated in the morning.

The best way to make use of the SONU's Sink-In Support feature is simple. Just allow your shoulder to sink into the Comfort Channel, making the vertebrae in the neck leveled while supporting your upper torso. 

If you sleep with a back or stomach, the SONU also conforms to your body, maintaining a level surface for optimal support. That level of comfort is what you can always expect from a SONU mattress.

Channel Support System

This feature of the SONU creates the optimal shape of negative space necessary to allow the sleeper's limbs to fully sink below the surface of the bed. 

The Channel support system was designed to help support the lateral pressures from the Support Pillows and maintain the vertical support required for the upper torso. The side structures also act as hand supports when holding a device or book, reducing hand and wrist tension.

Upper Torso Relief

The SONU system supports the upper torso while allowing the shoulders and arms to submerge into the bed, dramatically reducing the weight normally required by these areas of the body to support the upper torso.

Cooling Layers

The cooling layers are made of two-inch-thick plush material that covers the entire top surface of the SONU Sleep System.

This cooling topper allows for the various support sections to be meshed seamlessly into one, providing the proper support under the upper torso.

This material is also at the base of the Comfort Channel and in the outer layers of the Support Pillows, which helps elevate the experience of comfort and cooling for all parts of the sleeper's body.

The Cover

As with all layers and features of the SONU Sleep System, the outer cover is distinct in its form and function. 

The cover's material is ultra-flexible to account for any extra space required by submerged shoulders and arms. It covers the entire shape of the mattress, including the base of the Comfort Channel and the outermost cases of the Support Pillows. 

The top edge of the Comfort Channel is designed to flow directly into the negative space, ultimately getting rid of all seams and any discomfort that may occur. The cover material of the system is durable and astonishingly soft. It's also remarkably smooth and cool to the touch. 

How Does the Negative Space Mattress Improve Sleep Quality?

The unique design of the Negative Space Mattress improves sleep quality by evenly distributing your weight, keeping your spine aligned, and providing a space for your arms while sleeping on your side.

By evenly distributing your weight, the SONU alleviates the majority of the pressure that would otherwise be on sensitive areas like your neck and shoulders. That means you can count on waking up in the morning feeling better than ever.

With its Sink-In Support feature, the Negative Space Mattress keeps your spine aligned with the rest of your body, promoting better sleeping posture.

Best of all, the SONU provides you with a place to comfortably rest your arms, which is a life-changer for side sleepers.

Supportive Sleep Surface

The SONU is designed to provide more support than traditional mattresses, which can help you avoid back pain and improve your overall sleep quality. 

Unlike normal mattresses, the SONU is made with natural materials that allow your body to breathe better while offering support. The unique construction and extra support provided by the SONU help to keep you more comfortable than a traditional mattress ever could.

Why Should I Consider a Negative Space Mattress?

If you’re ready for a new mattress, the SONU is the perfect pick. Below are some of the key reasons to choose a Negative Space Mattress over a standard model.

Improved Sleep Health

First and foremost, Negative Space Mattresses help improve your sleep health. They conform to your body for optimal support and alignment, ensuring that you wake up feeling rejuvenated and rested in the morning. If you’re tired of trying to sleep well on an uncomfortable mattress, it’s time to make the switch.

Eco-Friendly and Sustainable

Unlike most mattresses out there, Negative Space Mattresses are eco-friendly and sustainable. They're made from natural materials like latex and wool, making them biodegradable and non-toxic. As a bonus, a Negative Space Mattress lasts longer than traditional foam mattresses, making your home more sustainable as a whole.

Supported Overall Wellness

While it’s often overlooked, sleep plays a critical role in maintaining your overall health and wellbeing. Without proper sleep, you might experience issues related to your immune system, mood, appetite, breathing, and even cardiovascular health. 

Here’s how better sleep can positively impact your overall wellness and promote a happier, healthier life:

  • Sleeping well supports a robust immune system. If you’re looking for a simple, practical way to stay healthy, sleeping on a high-quality mattress is the way to go. Getting around eight hours of deep, restful sleep each night helps keep your immune system functioning properly, setting your body up with solid defenses against illnesses. While sleep can’t make you immune to getting sick, it’s a key player in promoting immunity.
  • Sleeping well improves your mood. If your mattress isn’t designed to support your body, you’re probably used to waking up feeling groggy and irritable. That irritability can cause problems at home, at work, and everywhere else – and it all starts with bad sleep on a low-quality mattress. If you want to improve your mood, improve your sleep with a SONU Negative Space Mattress.
  • Restful sleep even helps regulate your appetite. When you don’t sleep well, it affects more than just your immunity, mental clarity, and mood. Sleep quality can also impact your appetite, making you more likely to give in to cravings for unhealthy food. So, if you’re trying to maintain a healthy weight, investing in the right mattress can make a huge difference.

Stylish and Contemporary

The Negative Space Mattress isn’t just functional – it’s aesthetically pleasing, too. The SONU has a modern, sleek design that makes it right at home in any bedroom.

If you're worried about your mattress taking up too much space, The SONU is a perfect pick. Its innovative design makes it easy to fit into smaller spaces. In addition, the SONU has a variety of color and texture customization options, so you can find the perfect one to match your bedroom decor.

What To Consider When Buying This Type of Mattress

The Negative Space Mattress is ideal for side sleepers who haven’t had any success with typical beds. Side sleeping is the most popular sleep position among adults, which means it’s likely that if you’re reading this, you sleep on your side. If you’re tired of struggling to get comfortable, not having anywhere to put your arms while you sleep, and waking up with a stiff neck, the SONU is what you’ve been waiting for.

While the SONU Negative Space Mattress is geared towards side sleepers, it also offers ultimate comfort to everyone. Stomach and back sleepers can benefit from the mattress’s ergonomic design, so you don’t have to sleep on your side to love your SONU.

Choosing the Right Mattress

There are so many options available on the market these days that it can be hard to know which mattress is right for you. Below, we've outlined some of the most important factors to look at when choosing a mattress. 

Mattress Type

There are three main types of mattresses: 

  • Spring beds can be either traditional or electric (adjustable). 
  • Foam is more common in modern-day bedding. They come with different levels of firmness/softness depending on what works best for whoever will sleep on them. 
  • Air beds have an inflatable chamber that allows users to change how hard or soft their sleeping surface feels by pumping up or letting out air pressure. Remote controls and automatic pumps can be found on most models these days. 

When purchasing a mattress, you'll want to keep your sleep habits and routines in mind. For example, if you often experience back pain, you may want to look into buying a mattress that offers extra support. 

Mattress Size

Mattress size is also something you'll need to consider when choosing a mattress. 

Do you need a twin, full, queen, or king bed? 

First, you'll also want to consider how much space you have in your bedroom before purchasing a mattress. 

You'll also want to consider how many people will be sleeping in the bed when it comes to size. If two people are sleeping in the bed, then a queen or king-size would be best. If only one adult person is sleeping in the bed, then either a twin or full-size mattress would work.

Consider the SONU Sleep System

If you are looking to revolutionize your sleep experience, the SONU Sleep System takes comfort to the next level. Through research and innovation, SONU offers a mattress system that has Sink-in Support, adjustable head and neck layers, and a built-in slot for your arm and shoulder. There’s no other mattress like it on the market.

The Comfort Channel and layered Support Pillow system can mold to your body shape and desired sleeping position, all while reducing pressures that are unavoidable with typical mattresses.

Our Negative Space Mattress comes in the following sizes: Twin XL, Queen, King, and Cali King. 

With a SONU, you'll fall asleep faster, enjoy deeper sleep, get ergonomic support, and of course, experience ultimate comfort. 

What Sleep Guidelines Should I Follow After I Have My SONU? 

You've researched the options and decided the SONU is right for you. Now what? Follow the guidelines below for the perfect night’s sleep on the Negative Space Mattress.

Guideline #1: Optimize Your Bedroom

The SONU is the new centerpiece for your bedroom, and it’s everything you need for rest and relaxation at night. While you technically don’t need anything other than a high-quality mattress for a peaceful night’s sleep, optimizing your bedroom can make your nighttime routine even more serene.

To get the most out of your SONU, we recommend eliminating all of the following from your bedroom:

  • Noise: Your bedroom should be the part of your home where you can count on peace and quiet. You’re likely to sleep best if you reduce the amount of noise that reaches your bed, and there are a few simple ways to keep things quiet. You can start by installing noise-dampening curtains, placing your bed away from shared walls, and even opting for noise-canceling headphones while you sleep.
  • Light: Your body naturally releases melatonin in response to darkness. This chemical signals to your brain that it’s time to wind down and go to sleep. Without a dark, comfortable environment in your bedroom, you might find it tough to rest – even with the perfect mattress. Try eliminating light from your bedroom with curtains or wearing a sleep mask to get the perfect amount of darkness throughout the night.
  • Extreme temperatures: One factor that makes it especially difficult for many people to fall asleep is the wrong temperature in the bedroom. If your room is too hot or too cold, you might find yourself tossing and turning for an hour or more before you finally fall asleep. If that sounds like a familiar experience, it might be time to readjust the thermostat at night – and switch your mattress. The optimal temperature for sleeping is relatively cool – in the mid-to-high 60s. A cooling mattress like the SONU can help you stay comfortable and keep you from getting too warm while you try to sleep.

Guideline #2: Change Your Sheets

Make sure to change your sheets at least once a week. Switching out your bedsheets may seem like common sense, but it’s all too easy to forget about the importance of bedroom hygiene for optimal sleep. Dirty sheets can increase dust mites, which can exacerbate allergies and asthma symptoms. By changing your sheets regularly, you can decrease the number of allergens in your bed.

In addition to reducing allergen counts in your bedroom, changing your sheets frequently can also be beneficial if you deal with skin issues. A buildup of dead skin cells and oil on your pillow and sheets can lead to breakouts. Luckily, washing your sheets frequently makes it easy to protect your skin while you sleep. 

The SONU’s revolutionary design deserves to be paired with the perfect set of sheets. If you’re on the lookout for the right bedsheets for your Negative Space Mattress, look no further than the SONU Sheets. Designed to pair with the SONU’s Comfort Channel feature, these sheets are soft, cooling, and unbelievably comfortable. They’re available in a variety of colors and sizes to perfectly match your SONU and bedroom decor.

Guideline #3: Rotate Your Mattress

One easy way to improve your comfort level while sleeping is routinely rotating or flipping your mattress. A regular rotation can prolong the mattress’s life and ensure that one side of your bed doesn’t support the majority of your weight all the time. Aim to flip your mattress every few months.

More Tips for Restful Sleep on Your New Mattress

You've purchased a new mattress, but you’re still finding it hard to sleep well. If your SONU isn’t giving you the rest that you need, you’ve got a 100-night trial to see if anything changes. However, sometimes it isn’t the mattress that’s keeping you from sleeping well. If you already have your SONU and still can’t get the sleep that you need, try following these tips for more restful results.

Boost Your Comfort With Sleep Aids

Sometimes, all the noise of the outside world can be too much to handle, preventing you from sleeping through the night. If noise is keeping you up, try investing in a good pair of earplugs or a noise machine that will help block out any unwanted sound that might be keeping you up at night.

In addition, you might benefit from keeping a journal on your bedside table. If you find yourself awake in the middle of the night, write down what's going through your head. As soon as you're done writing, put the journal aside and try to fall back asleep.

If you still can’t sleep, it’s worthwhile to try drinking a soothing cup of herbal tea and reading a book. This calming practice is a simple way to relax the mind and body, giving you that extra push towards sleep when you need it the most.


Working out releases endorphins and serotonin, otherwise known as “happy chemicals.” If you're feeling stressed out or are in a bad mood, exercise could help. Not only will you be more alert and productive during the day after exercise, but you'll also sleep better at night.

In addition, exercising regularly can help regulate your body's natural cycle of sleeping and waking. That means that your daily workout can help you get tired at the right time and stay asleep throughout the night.

You don’t need to work out intensely to reap the sleep-boosting benefits of exercise. Even 30 minutes of walking per day may help you sleep better in the long run. 


Drink plenty of water during the day to stay hydrated. As is the case with exercise, proper hydration can also help you sleep better. Dehydration has been shown to interrupt your natural sleep cycle and make it difficult to fall asleep. So, before you hit the hay, drink a glass of water or herbal tea—both of which are hydrating and promote relaxation.

In addition to drinking enough water during the day and before bed, it might be wise to limit your caffeine intake if you’re struggling to fall asleep at night. Caffeine is a stimulant, which means it can keep you awake if you consume it at the wrong time. You probably don’t need to completely eliminate caffeine from your daily routine to sleep better, but it might be helpful to cut off your consumption of caffeinated beverages after noon. Caffeinated drinks to avoid after this point include coffee, black or green tea, some sodas, and energy drinks.


Nutrition plays a key role in your ability to fall and stay asleep at night. Eating healthy and having a balanced diet can help your body absorb nutrients the brain needs to help maintain adequate sleep.

To promote better sleep each night, try steering clear of high quantities of added sugar, refined carbohydrates, and other unhealthy ingredients that your body doesn’t need. Sugar, like caffeine, can keep you up at night when consumed in high amounts at the wrong times. You don’t need to cut it out of your diet completely for better sleep, but limiting your intake may make a major difference in how rested you feel each morning.


Stress is an unavoidable part of everyday life. It comes from everywhere – work, relationships, day-to-day tasks, and more. If you frequently feel overwhelmed by the burdens of life, you probably experience your fair share of nights spent tossing and turning with a mind full of worries. 

If that sounds like you, getting a night of restful sleep is one of the best de-stressing practices to adopt. The better you sleep, the stronger your defenses are against stress. However, there’s more to de-stressing than sleep.

Dealing with stress can be tough, but it’s easier with help from calming practices like meditation, journaling, light exercise, and healthy eating. Combining these habits with a night of deep, restful sleep on a SONU is exactly what your mind and body need to beat the stress.

Practice Self-Care and Daily Routines

Everyone needs some self-care days and daily routines to help keep their mental and physical health in check. Without enough self-care in your life, you might find it harder to sleep due to elevated stress. To avoid the impact of burnout and over-exhaustion on your ability to sleep well, take some time each day to relax.

One of the best ways to combat burnout and build consistency in your life is to establish a regular sleep schedule. That means going to bed at around the same time each night and waking up at the same time every morning. It might be difficult at first, but you’ll be amazed by how much of an impact this small change can make on your sleep quality – and overall quality of life.

In addition to establishing a sleep schedule, you can improve your nighttime and morning routines by adding soothing habits to the start and end of each day. Try taking a bath or shower before turning in for the evening, reading a book, or listening to soothing music. If you tend to get hungry in the evening, don’t be afraid to end the night with a light snack. All of these self-care practices can help regulate your body's natural sleep rhythm and improve your overall wellbeing along the way.

It’s harder than ever to maintain a calm mind in the overwhelming world we live in – but the SONU makes it easier. Combining a Negative Sleep Mattress with the habits listed above can help you live a happier, healthier life and start getting the rest you need.


With the invention of the Negative Space Mattress, the future of sleep has arrived. The SONU is proof that there’s something better out there for side sleepers – a mattress that provides unparalleled comfort and support.

The SONU’s innovative design is a far cry from any other mattress on the market thanks to its patented support system. The never-before-seen Comfort Channel makes it easier than ever to get comfortable while sleeping on your side. With help from the multi-layered Support Pillows, side sleepers can now get the rest they need without waking up achy and uncomfortable.

The SONU Sleep System is available in several sizes and styles to accommodate any sleeper's needs. If you’re tired of settling for a mattress that you don’t love, it’s the perfect time to swap out your old bed for the comfort of the Negative Space Mattress. You can even trial yours for 100 nights to make sure it’s the right fit for you.

Ready to experience the best sleep of your life? Get your SONU today.


Choosing the Best Sleep Position | Johns Hopkins Medicine

What type of mattress is best for people with low back pain? | Harvard Health

Effects of Diet on Sleep Quality 1, 2 | NCBI

Designed To Work Together
The SONU Sleep System

It is finally time to immerse into comfort, and sleep like never before.

The SONU Sheets

Soft, cooling and sustainable, with the Comfort Channel built in to fit your SONU.

The SONU Top Pillow Deluxe

The perfect amount of support and malleability to complement your SONU.

Trusted Reviews From Side Sleepers Nationwide
Shoppers and their reviews verified by
Thank YOU! Best mattress out there.
After being a gymnast for 15 years, I haven't felt this much relief from the pain in my shoulders and my hips while sleeping!! Thank you!
Steph C.
Highly recommended!
Creates the perfect space for your arm if you're a side sleeper. Changed the way I sleep forever.
Justin S.
So I actually own one of these. It's AMAZING. Yes it will take you a few weeks to get "used" to it... But that said, you will be AMAZED at how great your shoulders feel in the morning. Just unreal. Like sleep a full 8 hours without waking up type of sleep.
Jason R.
Buffalo, NY
I have very bad neck and back issues and this mattress is a dream! If you are a side sleeper you will love it and even if you like to sleep on you back you will love it! Very comfortable and totally worth the money!
Grace L.
i have suffered from shoulder pain while sleeping for several years, i had just about given up... then i saw this bed and decided one last try. i can't begin to explain what it feels like to sleep through an entire night... for the first time in 20 years the first weekend i had it. I'm so impressed with this bed... because what they are making is making a difference in people's lives.
Crystal G.
Lives up to the hype
This comfort channel they made is next level. I never imagined that I would be able to put my arm in the mattress. Takes all the pressure off my shoulder, which I so so need. YES
Kim J.
Highly recommended!
I’m a side sleeper and I used to wake up with a dead feeling arm from lying on it all night. Finally a mattress with a pocket for my arm. I tried all the pillows and even very expensive mattresses in the past, but nothing cured my circulation problems until I got the sonu sleep mattress. I love it!
Nic D.
Chicago, IL
...Sonu mattresses are in a league all by themselves. This is the most comfortable bed I have ever slept on. I have no more shoulder pain and numbness. I can now sleep through the night and not wake up in pain. If anyone is even thinking about getting a Sonu sleep system don’t think anymore. Pull that trigger. I 100% gaurentee you will not be disappointed.
Christopher B.
Made In The U.S.A.
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The SONU Sleep System was designed and developed in California, and is manufactured only in the United States - made with the highest quality materials and attention to detail for side sleepers everywhere.
* SONU Bedding and several SONU Supports are imported products. All other SONU products are made in the United States.

Finally let your arms rest where they're meant to...