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Sleep Number Mattress Reviews

Sleep Number has put its efforts toward expanding its basic air-mattress concept since 1987. They invented a way to customize mattress firmness for every customer,  and then added higher-quality materials and electronic innovation. Next, they developed ways to track sleep quality through the night and designed a mattress to adapt to those changes in real-time. All the while, Sleep Number has pushed the mattress industry towards understanding sleep and pushing customers to pursue more restful nights.

The Sleep Number logo is a blue circle with an “arrow up, arrow down” button. The message the image sends consumers couldn’t be more clear: Sleep Number puts good sleep at your fingertips. Turn the dial-up. Turn it down. Whatever works for you.

Sleep Number Overview

The Sleep Number ethos is based on empowering sleepers, starting with giving you control over how the mattress feels. You adjust your “sleep number” by adding or releasing air in an interior chamber to increase or decrease the firmness. Not only that, in the larger bed sizes, there are dual chambers. You and your partner can set different sleep numbers without hindering the others. But Sleep Number wanted to go further than just allowing customers to customize their mattress—they wanted to give sleepers targeted, personal information about their sleep. Enter Sleep Number’s SleepIQ® technology in 2014. The device is attached to your bed and works through a smartphone app. It tracks heart rate, breathing and motion during the night. It gives you a fuller picture of what your sleep cycle looks like. 

The company still wasn’t done. In 2017, Sleep Number pushed the SleepIQ® idea one step further when it introduced Sleep Number 360®, beds that actually adjust to your movement throughout the night to maintain your sleep number. Add a FlexFit base, introduced in 2014, and those features do even more work together. Depending on which base you choose, it will adapt by warming your feet when you’re cold or raise your head several degrees if you’re snoring. Put it all together and you get the “next level” of sleep technology all in one place. When you study Sleep Number bed reviews, you’ll find people respond to the possibilities those features promise.

Since we all experience firmness, mattress temperature, and comfort differently depending on our weight, body chemistry and sleep position, Sleep Number has tried to integrate your sleep number, your Sleep IQ® information and the Sleep Number 360® smart beds to unlock your sleep DNA and give you more restful nights and nights that are more restful overall. That three-pronged, personalized pursuit of good sleep is the biggest selling point of a Sleep Number mattress.  Of course, the technology behind these mattresses ensures that Sleep Number bed prices will feel like luxury mattress prices. Still, if you want to “know your sleep” while sleeping on a mattress that can do something positive with that knowledge, Sleep Number would say, “You’ve landed in the right spot.”

Sleep Number Mattress Models

Since there are so many models, we will highlight each collection here.

The Classic Series

Introduced in 2014, the Classic Series mattresses from Sleep Number now come standard with dual air chambers that stretch from edge to edge. Sleep partners can choose different firmness levels on each side. The mattresses in the classic collection come with a Responsive Air® feature that shifts the air by adding or releasing it to adjust to your body through the night. These beds also come with Sleep Number’s SleepIQ® technology that measures certain body functions through a smartphone app to show you how you sleep. These mattresses are also much more affordable than other Sleep Number beds. 

The Classic line includes two options:

  • Sleep Number 360® c2
  • Sleep Number 360® c4

The difference between the two mattresses is 1 inch of thickness. The c2 has a 2-inch layer in the top comfort layer made of gel-infused foam on top of the 6-inch air chamber layer. The c4 has a 3-inch layer. Also, the c4 has zoned support in the comfort layer, meaning it’s less dense to contour to hips and shoulders or more dense to support the neck or lower back. The Classic line beds are the most affordable you will find at  Sleep Number.

The Performance Series

The Performance series has all of the tech features of the Classic series except with an additional contour layer at the top of the mattress meant to relieve pressure on areas like the hips and shoulders. It doesn’t change the thickness of the mattress; just two pressure-relieving layers as opposed to a single one.

The models in this series include:

  • p5
  • pSE
  • p6

The p5 and pSE models have the same 4-inch comfort layer and features, except the pSE comfort layer is made of a foam that will retain less heat. The pSE and the p6 each have all of the same features, including the cooler comfort layer, but the pSE has a 4-inch comfort layer vs. a 5-inch comfort layer in the p6.

The Innovation Series

The Innovation series has all of the technological features of the Classic series and then adds a surface layer that absorbs and releases heat to keep the sleeper at the right temperature throughout the night.

The innovation series has three different models:

  • i8
  • iLE
  • i10

The i8 and the iLE have the same, deep 6-inch comfort layer. The comfort layer in the i10 is 7 inches thick. Overall, these are the plushest mattresses in the entire brand.

The Memory Foam Collection

The memory foam collection includes the same features of other models from Sleep Number — adjustable firmness, automatic adjustment to the sleep surface and it tracks SleepIQ® information, via a smartphone app, as you sleep.

The only Sleep Number® model exclusively featuring a memory foam layer is the m7. The m7 memory foam comfort layer is 5 inches thick. You should feel both the contouring and pressure-relieving qualities that most expect to feel with memory foam. This layer also works to keep you cool since it absorbs heat and then releases it when you grow too cool.

Most Popular Sleep Number Beds

The most popular beds in the Sleep Number brand are the Classic 360® c2 and the Innovation 360® i8 Smart Bed. The first makes the list because it offers a lot of design for the price. The second does because it has every Sleep Number bell and whistle they offer. 

Classic 360® c2

The Classic 360® c2 is the baseline model among all Sleep Number 360 beds. No fancy foam layers. No expensive base. Just 2 inches of fabric and foam on top of the eponymous, adjustable air chamber that basically makes a Sleep Number bed. It’s affordable for a Sleep Number mattress and you can still adjust ho firm it feels. It’s a budget option, but one with the most attractive mattress feature Sleep Number sells.

Innovation 360® Smart Bed i8

The Innovation 360® Smart Bed i8 is 12 inches thick with a soft and breathable fabric cover. The 6-inch comfort layer in the i8 uses two different types of foam for support and pressure relief. There is also a special material in the surface of the mattress that releases heat so the mattress keeps its cool. This bed has the dual air chambers that you can adjust to find the right firmness, SleepIQ® tracking, the temperature-balancing surface and the Responsive Air® feature that will add or release air as you shift at night to make the bed more comfortable.

Which Sleep Number Bed Is Best for Me?

People who are Curious about Sleep Number

Looking for a gateway into the Sleep Number brand? If so, the Classic Series is for you. They still offer most of the same technological features of higher-priced versions but are more affordable and great for people who want to try the Sleep Number experience without breaking the bank.


All Sleep Number mattresses have dual air chambers that stretch from one edge of the mattress to the other. This is a great feature for couples who will want to use the entire surface of any mattress. And because of their durability and unfussy design, the Classic mattresses are also good choices for heavier back and stomach sleepers.

Related: Best mattresses for couples

Bigger Bodies, People with Pain, and Luxury Shoppers

The Performance Series comes in three models—the p5, pSE, and p6 models. These models add different sorts of foam on the top of the air chambers to relieve more pressure on wider shoulders and hips and curvier bums or stomachs. They are built to do a better job of that than the Classic models. For the most part, the Performance mattresses will suit most sleepers no matter their weight or sleep position.

Related: Best mattresses for heavy people

Side Sleepers

There is one full memory foam mattress in the m7. The m7 should work for people who are used to memory foam or want something of a hybrid that still includes memory foam. It strikes a good balance between curving to hips and shoulders and still supporting lighter areas of the body like the neck and back. This is a good mattress for side sleepers since the memory foam itself is best suited for contouring to those specific and wide-body parts.

Light Sleepers

There are three models in the Innovation series—the i8, iLE, and i10. By and large, they’re on the softer side of the spectrum. That makes these best for side sleepers and lighter sleepers.

Best Sleep Number Mattress by Sleeping Position

Side Sleepers

Most people like to sleep on their sides or sleep on their side and another position any given night. Ironically, none of the Sleep Number offerings are really great for side sleepers. The concept behind the air mattress is you can adjust the firmness, but the right firmness is not the only thing that you need to sleep soundly. The top layers in each of the mattress vary in thickness. You’ll want something a little thicker and conforming to cradle the hips and shoulders. The Innovation mattresses and the m7, with its full memory foam comfort layer, are thicker in the comfort layer and are a better fit for side sleepers.

Back Sleepers

The Classic and Performance mattresses have the right mix of durability with some contouring that back sleepers need. Back sleepers don’t need the most contouring, just enough to ease over the booty. The important thing is to keep the hips aligned with the rest of the spine and the five mattresses in those two series fit the bill here.

Stomach Sleepers

Again, the Classic and Performance mattresses contour enough while being strong enough. They should curve around your stomach while avoiding giving way so much that your backs or hips are thrown out of alignment with the rest of your spine.

Lighter vs. Heavier Sleepers

The Sleep Number beds tend to skew firmer across the board. That makes them fairly durable for heavier sleepers, especially the Classic models, but potentially too intense for lighter weight people.

Pros and Cons of Sleep Number Mattresses



  • Choose mattress firmness (your Sleep Number®) from a remote control or smartphone
  • Learn about your sleep habits via SleepIQ®
  • Bed adapts to you during the night via Responsive Air®
  • FlexFit foundations can raise your head to stop snoring or warm your feet
  • Affordably priced options and more expensive options available
  • Couples can choose different firmness levels on each side of the bed
  • Fairly light and easy to assemble
  • Tops above air chambers may or may not contour enough for side and stomach sleepers
  • Replacement parts not covered in warranty increases the cost of an already expensive mattress
  • Must pay for shipping

Pricing and Specs

Model Dimensions

  • Twin: 38 x 75
  • Twin XL: 38 x 80
  • Full: 54 x 75
  • Queen: 60 x 80
  • King: 76 x 80
  • Cal King: 72 x 84

Sleep Number Model Pricing

Classic C2 $599 $699 $799 $999 $1499 $1499
Classic C4 $1399 $1499 $1549 $1699 $2199 $2199
Performance p5 $1849 $1999 $2274 $2399 $2899 $2899
Performance pSE $2199 $2299 $2599 $2799 $3399 $3399
Performance p6 n/a $2399 n/a $2899 $3499 $3499
Memory m7 n/a $3149 $3424 $3599 $4299 $4299
Innovation i8 n/a $3149 $3424 $3599 $4299 $4299
Innovation iLE n/a $4399 $4674 $4999 $5699 $5699
Innovation i10 n/a n/a n/a $5099 $5799 $5799


Classic C2 Budget option Adjustable: Med-Firm to Firm 80-100 lbs 8”
Classic C4 Budget option Adjustable: Medium to Firm 80-100 lbs 9”
Performance p5 Pressure relief Adjustable: Medium Soft to Firm 80-100 lbs 10”
Performance pSE Pressure relief Adjustable: Medium to Firm 80-100 lbs 10”
Performance p6 Pressure relief Adjustable: Med Soft to Medium Firm 80-100 lbs 11”
Memory m7 Memory foam Adjustable: Soft to Firm 80-100 lbs 11”
Innovation i8 Cooling Adjustable: Med Soft to Med Firm 80-100 lbs 12”
Innovation iLE Cooling Adjustable: Med Soft to Med Firm 80-100 lbs 12”
Innovation i10 Cooling Adjustable: Soft to Med Firm 80-100 lbs 13”

Sleep Number Buying Experience

Trial Period and Returns

Sleep Number gives you 100 nights to test drive their beds. There are a lot of moving parts built into a Sleep Number bed. We would recommend you take 30 nights of sleeping before deciding whether to keep any mattress. We would recommend taking at least that amount of time for the Sleep Number. You may need some time to figure out which number/firmness at which you sleep most comfortably. 

If you decide the mattress, or any of the individual layers, doesn’t work for you, just initiate a return within 100 days. Sleep Number has to authorize it before you can expect a return. Once you initiate a return, you have 30 days to get it back to Sleep Number. You will pay to return your mattress. After all of that, and after your returns have arrived at Sleep Number, you’ll have to wait 21 days for your refund. 

But you can exchange your mattress for an upgrade or downgrade. You’ll have to pay the difference for the upgrade. You’ll get a refund of some portion of the difference if you choose a lower-priced model.


All of the SmartBed 360® mattresses we mention here are covered by a 25-year limited warranty for defects in materials or workmanship. It’s prorated (refunds will decrease the longer you’ve used the mattress) after two years. We’re assuming you use it the way it was meant to be used and comply with other conditions. If you don’t, you void the warranty.  For example, it applies only to the original buyer. You cannot use a box spring as a base. It nullifies the warranty automatically if you do. You must have the original receipt to use the warranty. You cannot have removed the law label. You cannot open the Firmness Control system or the remote yourself.  There are different sorts of parts to Sleep Number beds because of the air chamber in the middle that makes the mattress adjustable and parts of the warranty make specific reference to these elements. 

Shipping and Delivery

You can spring for the Comfort Service Home Delivery ($199) or use UPS standard ground shipping ($99). The first will bring special technicians to your door to assemble your mattress for you, remove your old mattress or move the old one into a different room. Make sure to ask if Sleep Number delivers in your area. The Comfort Service Home Delivery is not available in Hawaii. If you ship via UPS, you’ll receive instructions on how to put your mattress together. Keep in mind that some Sleep Number beds cannot be shipped via UPS because they’re heavier than the UPS weight limit. As far as where you can receive Sleep Number beds, UPS will deliver Sleep Number beds to all 48 contiguous states in the U.S., Puerto Rico and the U.S. Virgin Islands. One last thing, Sleep Number mattresses ship in six separate boxes and the air chambers are not inflated. You do that on your end.


Sleep Number does offer financing. Terms will vary depending on how quickly you want to pay off your purchase and which sales are in play at the time of your purchase. If you’re approved for financing, it will come in the form of a Sleep Number credit card. You can apply online even before you select a mattress.


You may purchase a Sleep Number bed at a Sleep Number store or online at the company website. I’d be wary of buying other places. Their warranty isn’t very accommodating.

Sleep Number Complaints

We’re talking about a mattress that features a pocket of air. Sure, it’s a more advanced approach to the sort of thing you take on a camping trip and inflate with a compressor. While the mattresses are thoughtfully appointed, you may still run into some of the same problems with a mattress that cost over $1000 that you would with the $40 one.

  • These beds have a lot of moving parts. You run a higher risk of something breaking down. And the warranty doesn’t cover everything. 
  • Some would describe the Sleep Number as a fancy air mattress, but some customers say it feels more “air mattress” than “fancy.” 
  • These mattresses are expensive. There is a lot of research and development that goes into them to offer features like Sleep IQ or Responsive Air. Customers hint that would be OK if you weren’t paying extra for replacements, which some complain wear out too quickly.
  • If either chamber is more firm (inflated) or soft (deflated) than the other, the mattress could sag in the middle. You’re raised higher than your partner and gravity takes over and someone could slide into the “trench.”


Sleep Number long ago grabbed hold of a low-brow idea and taken a high-brow approach to build the best their air-chamber mattresses they can. “Low” in that they’re mimicking the same technology that many of us use on camping trips. “High” in that they double-down on research and development in every other aspect— introducing adjustable firmness, a SleepIQ app which is integrated with the bed itself, and responsive models that will adapt to your shifts and add or release air accordingly. The real conundrum for sleepers is whether all of that is worth the price. Looking at Sleep Number reviews from customers, some are put off by the extra costs for delivery and replacement parts.  If luxury prices don’t fit your personality or your budget, you might want to look elsewhere. 

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