Serta has been making mattresses for over 100 years, including its aptly named โPerfect Sleeperโ line. The Perfect Sleeper X Hybrid is one of the higher-tier models, but does it live up to the promise of perfection?
This hybrid features a firm, supportive feel that should appeal to sleepers who want to feel lifted on top of their mattress. It excelled across the board in our testing categories, including motion isolation, responsiveness, and edge support. As a well-rounded bed, itโs not quite a one-size-fits-all option, but itโs certainly a jack-of-all-trades.
Our team of expert testers has reviewed more than 500 mattresses over the years weโve been in operation. In fact, weโve helped more than 43,000 shoppers find their mattress match. If you want to join their ranks, read on to see if the Serta Perfect Sleeper X might be the bed for you..
Our Serta Perfect Sleeper X Review in a Nutshell
The Serta Perfect Sleeper X is a firm-feeling hybrid mattress that should provide essential support and alignment to sleepers who need it, particularly those who rest on their back or stomach. Itโs also a great mattress for back pain, but its lack of body contouring and pressure relief likely wonโt satisfy sleepers with sensitive joints. Finally, it earned high marks for motion isolation, edge support, cooling, and a perfect rating for responsiveness.
The Serta Perfect Sleeper X is a hybrid mattress that prioritizes support and bounce. We tested the Medium version of the Level One model and found it much firmer than expected, rating it an 8/10 on our scale. This makes it a great choice for back and stomach sleepers, heavyweight folks, or anyone who prefers to feel lifted on their mattress. It balances motion isolation and responsiveness, offers excellent edge support, and should keep surprisingly cool. However, we wouldn't recommend it to sleepers with sensitive joints or anyone looking for deep contouring from their mattress.
Serta Perfect Sleeper X Mattress Performance: My Overall Rating
At Mattress Clarity, we evaluate everything about a mattress, from how cool it feels to the customer service that comes along with it. Each of these categories receive a rating out of 5, which are then tallied into our final overall rating. This number reflects the performance of the bed as a whole.
The Serta Perfect Sleeper X Hybrid earned an overall score of 4.6 out of 5. This impressive number is thanks to the bedโs performance in cooling, edge support, motion isolation, and responsivenessโall of which earned a 4.5 or above. The mattress earned its lowest scores in pressure relief (due to its firmer feel) and customer experience (due to its shorter trial and warranty).
Note: We tested the Level One model of this bed with the Medium feel.
I Recommend the Serta Perfect Sleeper X Forโฆ
- Stomach and back sleepers โ These sleepers will benefit from the Perfect Sleeper Xโs firm, supportive feel.
- Couples โ This mattress earned exceptional ratings for motion isolation, responsiveness, edge support, and cooling, all of which should appeal to sleepers who share the bed.
- Older adults โ This bedโs strong edge support and responsive feel should help older sleepers transfer in and out of bed easily.
I Donโt Recommend the Serta Perfect Sleeper X Forโฆ
- Lightweight side sleepers โ The Serta Perfect Sleeper X will be too firm for most side sleepers, especially lightweight ones, because of its lack of contouring.
- Sleepers with joint pain โ Similarly, sleepers with sensitive joints wonโt get the cradling they need to protect these areas and relieve pressure.
- Fans of soft mattresses โ We tested the Medium model of this mattress and found it skewed very firm, so I wouldnโt recommend it for sleepers after a softer bed.
How Well Did the Serta Perfect Sleeper X Perform?
As I mentioned, we test and evaluate a number of areas when reviewing a mattress. A high score or rating is generally a good sign, but we also like to consider how it stacks up against the competition. Below, youโll find all our metrics about the Serta Perfect Sleeper X, as well as how it compares to our average of the hundreds of beds weโve tested.
| Test | Performance | Average |
| Firmness | 8/10 โ Very Firm | 6.7/10 โ Medium-Firm |
| Side Sleeper Comfort | Unpleasant | Good |
| Back Sleeper Comfort | Excellent | Good |
| Stomach Sleeper Comfort | Excellent | Good |
| Pressure Relief | 3.5/5 | 3.9 |
| Edge Support | 4.8/5 | 4.1 |
| Cooling | 4.5/5 | 3.8 |
| Motion Isolation | 4.7/5 | 3.9 |
| Response | 5/5 | 4.3 |
| Sinkage Depth | 3.5โ | 3.12โ |
| Sinkage Rating | Moderate | Moderate |
| Bounce Height | 19โ | 17.89โ |
| Bounce Rating | High | Moderate |
| Noise | 5/5 | 4.5 |
| Sex | 4.9/5 | 4.3 |
| Trial Period | 3.5/5 | 4.2 |
| Warranty | 3.5/5 | 4.6 |
How Firm is the Serta Perfect Sleeper X Mattress?
Firmness refers to how plush or hard a mattress feels. Our firmness scale runs from 1 to 10, with 1 being soft as a cloud and 10 feeling like youโre sleeping on the floor.
Most mattresses fall at around 6.5/10 on the scale, or medium-firm. โMedium-firm mattresses offer a good balance of pressure relief and support, making them a popular choice for most sleepers,โ adds Dr. Raj Dasgupta, sleep science expert. This is why many mattresses on the market are described at or around this firmness level.
We tested out the Level One, Medium model of the Serta Perfect Sleeper X Hybrid. Contrary to its description, we found this bed came in much firmerโat 8/10 on our scale, to be exact. This means that most sleepers should expect a lifted feel with minimal sinkage.
How Does the Serta Perfect Sleeper X Feel for Different Body Types and Sleeping Positions?
โYour body type and preferred sleeping position affect how comfortable a mattress feels,โ says Dr. Dasgupta. โCertain sleepers need softer or firmer beds with less or more support, so itโs important to find a bed that fits your needs.โ
The Serta Perfect Sleeper Xโs firm feel was a hit for back and stomach sleepers in our tests. Generally, sleepers between 130 to 230 pounds will have the most comfort on this mattress. Heavyweight sleepersโ weight will wipe out most of this firmness, so theyโll likely experience the most sinkage. Most lightweight sleepers may have the opposite problem, especially if they sleep on their side, where sinkage around the hips and shoulders ensures comfort.
| Sleeper Weight | Side Sleepers | Back Sleepers | Stomach Sleepers |
| Light (under 130 lbs) | Unpleasant | Excellent | Excellent |
| Average (130-230 lbs) | Good | Excellent | Excellent |
| Heavy (over 230 lbs) | Good | Excellent | Good |
Average-weight Tester โ 5โ6โ, 165 lbs
โMy hips were perfectly aligned and lifted when I slept on my stomach. I liked that a lot. However, even with the cushioning, it was too hard on my chest.โ โ Sosha Lewis, certified sleep science coach
Lightweight Tester โ 5โ5โ, 130 lbs
โThis bed was pretty firm to be, but it made for really good spinal alignment on both my back and side. Iโm finding myself craving a bit more cradling and contouring when side sleeping, as I do feel a twinge of pressure on my joints, but it feels wonderfully supportive and comfortable when back sleeping.โ โ Riley Otis, expert mattress tester
Serta Perfect Sleeper X In-Depth Test Results
Pressure Relief
โA pressure-relieving mattress will cushion parts of the body that sink into the mattress, reducing resistance,โ explains Dr. Raj Dasgupta. โBack and side sleepers must be cautious that their lower back, hips, and shoulders donโt dig uncomfortably into the mattress. If this is the case, their mattress isnโt offering the pressure relief they need.โ
To test a bedโs ability to relieve pressure, we therefore focus on back and side sleepers. We have testers representing different weight categories rest on a mattress on their back and side. On top of the bed is a specialized mat that records where pressure builds up across the surface.
The mat creates what we call a pressure map, a color-coded outline of the testerโs body that shows areas of high and low pressure. It also records the overall pressure distributed across the entire surface, measured in pounds per square inch (PSI). A lower PSI reading means less resistance overall, so we pit these numbers against our recorded averages: 14.58 PSI for side sleepers and 12.43 PSI for back sleepers.
Our Testersโ Experience
Our lightweight tester for the Serta Perfect Sleeper X Hybrid was my colleague Riley Otis. As a whole, Riley thought the firm feel of the mattress helped to keep her spine aligned for both side and back sleeping.
However, despite a low PSI (9.49 for side sleeping, 8.4 for back sleeping), she thought the bed didnโt offer the contouring she wouldโve liked. It was especially noticeable on her side, for which she rated the pressure relief at 3.5/5. She rated back sleeping a little higher at 4/5.
Our average-weight tester had a similar experience to Riley. She rated side sleeping at 3/5 and back-sleeping at 3.5/5. Though her overall pressure buildup was again quite low (11.47 for side sleeping and 8.78 for back sleeping), there wasnโt enough cushioning to cradle her hips and shoulders or contour to her lower back.
Sosha Lewis, also an average-weight sleeper, echoed her fellow testerโs sentiments: โIt was a little too firm for my personal preference, though I didnโt encounter much pressure buildup on my side,โ she said. โI was a much bigger fan on my backโit had just enough cushion to distract from how firm it is.โ
Our Medical Product Testerโs Experience
We also asked our medical product tester, Dr. Hannah Habeeb, for her opinion on this mattress. She evaluated it from an orthopedic standpoint, noting which sleepers may encounter pain or feel relief.
She agreed with our testersโ findings that the bed could pose a problem for dedicated side sleepers: โI think it could contribute to shoulder pain if youโre lying on your side all nightโnot too concerning, but something to note.โ
Back and stomach sleeping were her preferred positions, though she noted the alignment in each position could be beneficial to folks with back pain. โThe zoned support of this mattress keeps you in a neutral spinal alignment. It also contours your lower back without letting you sink in too far, providing good lumbar support,โ she explained.
Finally, Dr. Habeeb recommended this mattress for heavyweight sleepers. โYou donโt sink in too far to where youโre bottoming out, and it supports the body very nicely,โ she said. It also bodes well for side sleepers over 230 poundsโtheyโll likely get more sinkage than our lightweight and average-weight testers, which could mean better pressure relief.
Edge Support
A mattress with strong edge support wonโt collapse or buckle when bearing weight. This allows you to spread out on the mattress or use it as a second chair. The added stability can also help older adults or those with mobility concerns transfer in and out of bed. Finally, solid edge support is a precursor to durabilityโit means a mattress is less likely to sag with repeated use.
To test edge support, we first have one of our testers sit and lie down along the perimeter of the mattress. My colleague Sosha Lewis handled this test for the Serta Perfect Sleeper X and was impressed with the stability she encountered.
โWhen seated at the edge, thereโs very little sinkage, and itโs easy to get up and down,โ she said. โI also felt super secure resting on my back and sideโIโm not concerned with spreading out on this bed.โ She gave both these tests a 5/5 rating.
Next, Sosha performed our weighted edge support test. In this test, we stack weight plates along the perimeter of the mattress, incrementally increasing the weight to mimic a person of each weight category (lightweight, average weight, and heavyweight) sitting on the edge of the mattress. We then use a tape measure to record how far the mattress dips and give it a rating out of 5.
For a lightweight sleeper, we recorded 1.5โณ of sinkage, earning a 5/5. This was followed by 2.5โณ for an average-weight sleeper, also a 5/5 rating, and 3.5โณ for a heavyweight tester, earning a 4/5.
Combining these results, the Perfect Sleeper X earned a near-perfect edge support rating of 4.8/5.
Cooling
If youโre overheating on your current mattress, it might be time for a new cooling bed. These mattresses feature cooling technology like aerated foams, gel infusions, or fancy covers to promote airflow and temperature regulation. The Serta Perfect Sleeper X includes pocketed coils and graphite-infused foams for this reason, but to see if they hold up, we put it through our cooling test.
We use a thermal gun to measure the bedโs surface temperature in two instances: first, before anyone has rested on the mattress, and second, after someone has lain on it for about seven minutes. The increase shows how much heat a mattress absorbs or dissipates.
When Sosha performed this test, she recorded an initial temperature of 70.9 degrees, which then rose to 76.3 after her seven-minute nap. This 6.3-degree increase earned a 4.5/5, in accordance with our scoring chart below, and shows that the Perfect Sleeper X doesnโt hold onto heat.
| Less than a 4-degree change | 5/5 |
| 4-6 degree change | 4.5/5 |
| 6-8 degree change | 4/5 |
| 8-10 degree change | 3.5/5 |
| 10-12 degree change | 3/5 |
| 12-14 degree change | 2.5/5 |
| 14-16 degree change | 2/5 |
| 16+ degree change | 1/5 |
Sosha noted her experience resting on the mattress: โIt has a cool feel to it, but not overly so,โ she said. โBut I donโt think people would overheat on this mattress.โ
Most hot sleepers will be satisfied with the Perfect Sleeper X.
Motion Isolation
A great mattress for couples will absorb motion before it can travel across the surface. If youโre a light sleeper like me, youโve probably woken up from your partnerโs tossing and turning. A mattress with excellent motion isolation will combat that.
We perform two tests to evaluate motion transfer. First up is our water glass test. We place a glass of water on one side of the bed, then move around on the otherโgetting in and out of bed, switching positions, etc. How much the water or glass moves shows how much motion youโd feel on the other side.
Sosha noted virtually no rippling when she got in and out of the Serta Perfect Sleeper X. โWhen I was switching positions aggressively next to the glass, there was just a little more rippling,โ she noted. โBut Iโm a light sleeper, and I donโt think my restless husband would wake me up on this.โ
Next is the partner test. For this test, Sosha climbed into bed alongside a fellow tester. This time, he was the one moving around while Sosha lay on the other side.
โI couldnโt feel him when he got into bed,โ Sosha said. โI could feel him a little when he was switching positions, but that was more when he was close to me. In a king size bed, I donโt think it would be a problem at all.โ
Sosha thought the mattress had excellent motion isolation overall, awarding the Perfect Sleeper X a 4.7/5 in this category.
Response
Responsiveness and bounce are like close cousins. A responsive mattress will snap back into shape after you press down on it. This quality makes it easier for people to move around on the bedโs surface, as you wonโt feel โstuckโ in its layers. Combination sleepers and sexually active couples can both benefit from responsiveness.
The Serta Perfect Sleeper X is an exceptionally responsive mattress, earning a 5/5 in this category. Sosha had the โeasiest game of โsteamrollerโโ when moving around on this mattress. โIf you have a powerful fan, it may blow you across this mattress if you want it to or not,โ she joked. โThereโs a slight bit of contouring which feels good, but it doesnโt hinder you in the least.โ
Dr. Hannah Habeeb saw the benefits of these responsive coils for sleepers with mobility issues. โYou can transfer in and out of bed really easily because youโre not being sucked into the mattress,โ she explained. โA caregiver would have an easy time moving someone, too.โ
Sinkage: Moderate
Sinkage may sound negative on paper, but it all comes down to personal preference. A mattress with a lot of sinkage will hug and cradle you, while one with less sinkage will have you feeling lifted on the surface.
To test sinkage, we place a kettlebell on the surface of a mattress, then use a ruler to measure how far the bed dips. For the Serta Perfect Sleeper X, we recorded 3.5โณ of sinkage. This is considered โmoderateโ sinkage, which yields a balanced feel. Because of how firm and responsive this mattress is, though, I donโt think most sleepers will truly sink into this bed.
| Light Sinkage | 0-2.5โ |
| Moderate Sinkage | 2.6-4โ |
| Deep Sinkage | 4+โ |
Bounce: High
You may prefer a particularly bouncy mattress or something slow-moving, like a plush memory foam pillow top. Bouncy beds are easier to move around on, which can benefit folks looking for seamless repositioning during sleep or sex.
To measure bounce, we drop a ball from about six feet above the bed, recording how high it rises on the rebound. On the Serta Perfect Sleeper X, the ball bounced 19โณ into the air. Weโd consider this โhighโ bounce, and it makes sense with the bedโs firm feel and perfect responsiveness score. You could have fun launching yourself across the surface of this bed!
| Low Bounce | 12โ or less |
| Moderate Bounce | 12โ-18โ |
| High Bounce | 18โ or more |
Noise
The Serta Perfect Sleeper X didnโt let out a peep during testing. There was no squeaking or creaking from the coils to speak of, so we gave it a 5/5 for noise.
Sex
A great mattress for sex excels in three key areas: responsiveness, edge support, and noise. A responsive mattress is easy to move around on, strong edge support means you can make use of the surface area, and a quiet bed wonโt cause distractions.
The Serta Perfect Sleeper X excelled in all of these areas, including perfect ratings for both responsiveness and noise, plus a near-perfect 4.8/5 edge support score. Couples looking for an excellent mattress for sex will certainly be satisfied with this bed.
Serta Perfect Sleeper X Customer Experience Scores
When reviewing a mattress, we also take the company policies and purchase process into account, which generate our customer experience rating.
Trial Period
Many online mattresses come with a sleep trial. This trial period allows you to try out a mattress before you commit to buying it. Most brands will give you a few months (some, a year) to make your decision. So long as you initiate a return within this timeframe, youโll receive a refund.
The Serta Perfect Sleeper X comes with a 100-night trial. It should give you enough time to form an opinion on the mattress, but 100 nights isnโt the most generous weโve seen, so we rated it at 3.5/5.
Warranty
A mattress warranty protects your new bed from defects or flaws in its construction. We also see warranties as a preview of how long a manufacturer expects a bed to last. Most mattresses will last you around 7 to 10 years, so many warranties fall at or around this rangeโincluding the Serta Perfect Sleeper X.
This bed comes with a 10-year limited warranty. While it should last well into this bedโs lifetime, itโs on the conservative side. Weโve rated hundreds of beds that come with 15-year, 20-year, or even lifetime warranties. So, we gave the Perfect Sleeper X another 3.5/5 rating for its warranty.
Delivery
Most beds sold online are whatโs called bed-in-a-box mattresses. As the name implies, these beds arrive compressed in a box. This makes them easy to transport into your bedroom and setup, but youโll also have to unbox the mattress yourself and wait for it to expand. You may even contend with off-gassing, that harmless but potent โnew mattressโ smell.
The good news is that the Serta Perfect Sleeper X comes with free white glove delivery. This means that a team comes to your home with the mattress (fully expanded, never compressed) and sets it up for you. Theyโll even take away your old mattress, all for free. This eliminates the hassle.
We took advantage of this service when we tested the mattress in our studio. Delivery was smooth, but note that youโll likely have to communicate with the movers to decide on the specific timeframe.
Serta Perfect Sleeper X Construction
Now that weโve gone over how this bed performs and all the freebies that come with it, letโs take a closer look at whatโs inside this mattress.
Mattress Height & Weight
The height and weight of the Serta Perfect Sleeper X Hybrid depends on which level and firmness option you choose. The Level One model can run from 12.5โณ to 13โณ tall. The Level Two is a bit thicker at 14โณ tall. In the same vein, a queen-size Serta Perfect Sleeper X will weigh anywhere between 121 pounds to 182 pounds.
Materials
As a hybrid mattress, the Serta Perfect Sleeper X contains foam layers and a coil unit. The Level Two version of this bed also features a pillow top for added plushness.
Layers
Note: We tested the Medium version of the Level One model. Construction may differ slightly between firmness and level options.
The Serta Perfect X starts out with a soft, cooling cover on its flat surface to provide active temperature regulation.
Underneath are multiple foam comfort layers, including pressure-relieving and graphite-infused memory foam. The latter helps regulate temperature.
The coil layer features five zones to provide targeted support. Itโs firmer in the center and softer around the hips and shoulders to encourage full-body alignment.
Finally, a slab of support foam rounds out the mattress as a sturdy base.
How To Try and Buy the Serta Perfect Sleeper X Mattress
While Serta mattresses are sold online through the brandโs site, you can find in-person showrooms through the store locator. The Serta Perfect Sleeper line is available at major retailers like Macyโs and Ashley Furniture.
But in my opinion, the easiest way to try out a Serta mattress is to take advantage of the brandโs sleep trial and free white glove delivery. The bed is delivered to your house and set up free of charge, and then you have 100 nights to see if itโs right for you. If you decide it isnโt, you can receive a full refund.
Serta Perfect Sleeper X Prices & Sizes
| Size | Price |
| Twin XL | $1099.00 |
| Full | $1249.00 |
| Queen | $1399.00 |
| King | $2099.00 |
| California King | $2099.00 |
How the Serta Perfect Sleeper X Compares
Unsure if the Serta Perfect Sleeper X is the right match for you? Letโs take a look at how it fares against some of our other recommendations:
- Nectar Classic Hybrid โ Softer Hybrid
- DreamCloud Classic Hybrid โ Cheaper Hybrid
- Saatva Rx Mattress โ Better for Joints
|  |  |  | |
| Rating | ||||
| Firmness | Firm: 8/10 | Soft: 5.5/10 | Medium-Firm: 7.5/10 | Medium-Firm: 6.5/10 |
| Material | Hybrid | Hybrid | Hybrid | Hybrid |
| Cooling | โ | โ | โ | โ |
| Best For | Side Sleepers, Back Sleepers, Stomach Sleepers | Back Sleepers, Stomach Sleepers, Hot Sleepers | Side Sleepers, Back Sleepers, Stomach Sleepers | |
Serta Perfect Sleeper X Hybrid vs. Nectar Classic Hybrid
At an 8/10 on our firmness scale, the Serta Perfect Sleeper X is quite a firm mattress. While this is excellent for support and spinal alignment, it may not be the match for every sleeper. Side sleepers, folks with sensitive joints, or those who just like to feel โhuggedโ by their mattress may prefer the Nectar Classic Hybrid.
This mattress comes in at a plush 5.5/10 on our firmness scale. It also features multiple layers of memory foam that give it a slow-moving feel. Because of this, it has excellent motion isolation, just like the Perfect Sleeper X. However, the Serta Perfect Sleeper X is the bouncier of the two, so particularly rowdy combination sleepers may appreciate the springiness of this mattress.
Serta Perfect Sleeper X Hybrid vs. DreamCloud Classic Hybrid
The Serta Perfect Sleeper X Hybrid can cost quite a pretty penny if you opt for one of its plusher or higher-level models. If youโre after a bed under $1,000 with a similar feel, check out the DreamCloud mattress. This is another firm, responsive, and supportive hybrid.
Like the Serta Perfect Sleeper X, the DreamCloud has excellent edge support and bounce, making it a great pick for combination sleepers and those who like to spread out on the bedโs surface. However, we were impressed by the bedโs pressure relief, thanks to its cushioning pillow top that allowed for a bit of sinkage. Some side sleepers may be able to rest comfortably on the DreamCloud, while the Perfect Sleeper Xโs lack of sinkage could create pressure points.
Serta Perfect Sleeper X Hybrid vs. Saatva Rx
While we recommend the Serta Perfect Sleeper X for older adults, many of these folks are also dealing with arthritis or generalized joint pain. The Perfect Sleeper Xโs extra-firm profile may not benefit them, especially if they rest on their side. Conversely, the Saatva Rx is a luxury hybrid designed to help folks with chronic pain concerns.
The Saatva Rx has a sumptuously soft feel that will contour and cradle your body. It earned an impressive 4.7/5 for pressure relief, compared to the Perfect Sleeper Xโs 3.5/5 rating. However, the Perfect Sleeper X does offer better edge support, which could make getting in and out of bed easier. The Saatva Rx is also a luxury mattress, so itโs much more expensive than the Perfect Sleeper X, costing upwards of $3,000 for a queen.
Serta Perfect Sleeper X Mattress FAQs
Is the Serta Perfect Sleeper X Hybrid a good mattress?
The Serta Perfect Sleeper X Hybrid is a good mattress for folks who like a firm, supportive, and responsive feel. We love it for back sleepers, stomach sleepers, seniors, and couples.
How long will the Serta Perfect Sleeper X last?
The Serta Perfect Sleeper X should last well into its 10-year warranty, if not beyond, thanks to its durable hybrid construction. We still recommend replacing your mattress every ten years.
Can you flip the Serta Perfect Sleeper X mattress?
No, you cannot flip a Serta Perfect Sleeper X Hybrid. Itโs made so that the softer comfort layers are on top and the coils are on the bottom. Flipping it means youโll be resting on top of the innerspring unit, which will feel uncomfortable. To increase the lifespan of your mattress, consider rotating it regularly instead.
