Serta Perfect Sleeper X - Aspen 12.5" Firm Twin XL Hybrid Mattress - 5 Support Zones and Cooling Tech for a Restorative Sleep - 100 Night Trial, CertiPUR-US Certified
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Availability:
In Stock.
Arrives
Wednesday, Nov 12
Style: Level 1 Firm 12.5"
Size: Twin XL
Features
- Firm Feel: Ideal for stomach and back sleepers with extra support; This smooth top hybrid mattress is not compressed into a smaller box and is Assembled in the USA
- Support: Serta's 5 Zone Active Design combines five zones of coils and contouring memory foam to offer comfort and support where you need it most for full-body spinal alignment
- Pressure Relief: Serta's premium Perfect Conform memory foam is graphite-infused and designed not only to provide targeted pressure
- Cooling: 1 of graphite-infused memory foam and Cool Twist Gel memory foam with cooling gel swirled into premium memory foam offers enhanced airflow, heat dissipation, and contouring comfort
- Certified: All Serta Perfect Sleeper mattresses feature a 100 Night Trial, a 10-Year Limited Warranty, and CertiPUR-US certified foams free of harmful chemicals, so you can rest easy; Plus, all mattresses are compatible with adjustable bases
Description
Experience xtra premium support and xtra perfect sleep with our new Serta Perfect Sleeper X Collection. Our 5 ZoneActive Design promotes full body spinal alignment for xtra support. Sleep comfortably cool throughout the night with xtra cooling technology and graphite-infused Perfect Conform Memory Foam designed to redistribute heat away from your body. Xtraordinary sleep is possible, with Serta Perfect Sleeper X
Brand: Serta
Size: Twin XL
Product Dimensions: 79.5"L x 39"W x 12.5"Th
Top Style: Tight Top
Cover Material: Polyester Blend
Number of Layers: 7
Fill Material: Memory Foam, Pocketed Coils
Special Feature: Breathable, Durable, Low Motion Transfer, Pressure Relief, Temperature Regulating
Color: Black
Coil Type: Pocketed Coil
Product Dimensions: 79.5 x 39 x 12.5 inches
Item Weight: 50.6 pounds
Manufacturer: Serta Simmons Bedding, LLC.
Item model number: 50
Refill: Memory Foam, Pocketed Coils
Care instructions: In order to protect your mattress from stains and spills, we recommend using a mattress protector. This will also help with the overall health and lifespan of your mattress., To clean your mattress, we suggest applying baking soda to the soiled area and letting it stand for about 15 minutes. Then, vacuum and repeat as needed. It's important that you also air the product out as much as possible., We do not recommend applying liquids to the product. Applying liquids may stain the fabric and could potentially make the soiled area worse. Moisture or chemicals applied directly to the mattress can cause premature breakdown of the foam and damage the product.
Batteries required: No
Included Components: Mattress
Age Range Description: Adult
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Wednesday, Nov 12
Yes, absolutely! You may return this product for a full refund within 100 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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It’s a great mattress with lovely finish, extremely comfortable. I’m definitely happy with this investment. The "bonus": the nicest, most efficient two men delivery crew. I don’t know their names, but really appreciate not only the superb working ethics, but also most cordial, positive attitude that brightened our entire weekend. Thank you! I hope you get a good bonus, too!
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Reviewed in the United States on August 16, 2025 by Rebel Dorota
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Arrived well packaged, well protected. Having this after retiring the old traditional spring mattress really helped with aches and pains! No exaggeration
Reviewed in the United States on May 28, 2025 by Kindle Customer
Style: Level 1 Medium 13"
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This Perfect Sleeper X Kendall (13" medium) mattress fits roughly in the middle of the Serta's Perfect Sleeper line-up. The "X" series introduce a higher density, five-zone arrangement of pocketed springs (1,000 at queen size), with the top layers leveraging more traditional memory foam materials (as opposed to latex top layers in the Perfect Sleeper Pro collection). I was specifically interested in the five-zone spring layout, as I am a 240-lb combination sleeper, and usually find myself either sinking too deep on plus mattresses, or not being able to find a comfortable position on the ones in the firm category. The mattress was delivered by the Amazon delivery crew - I paid extra to get it unpacked and to have my old mattress recycled. If there was any factory smell, it faded quickly, and we did not notice it by the evening. The mattress is quite heavy, but it is not insanely thick (at just 13"). The top surface of this Kendall model is flat and covered with a somewhat stretchy fabric which incorporates heat-trapping microbeads for cooling effect. Memory foam layers are immediately below this fabric, so the memory foam behavior is not muted by a quilted layer you find on many traditional mattresses (for those who prefer quilted top or even a pillow top, Serta offers other Hybrid X models with those features). As a "level 1" model of Hybrid X, this mattress does not have an additional layer of micro-coils closer to the top, a feature available in level 2 line-up. The mattress is rated by Serta as "medium"; the initial impression was that it felt a bit toward the firm side, but after a couple of days of breaking in, the feel is definitely a medium firmness (I would probably rate it as 4.5 out of 10, with 1 being a rock, and 10 being a puffy pillow). The initial response is quite firm, but as memory foams settle, they contour nicely around your body, yet without causing you to sink too far. That's the point where the springs take over and provide support. The 5-zone arrangement puts two bands of thicker coils in the lumbar and thigh area, and thinner / softer coils elsewhere. As your body settles into memory foam, the springs distribute the load across your entire body. When you lay on your back, there is a noticeable sense of support to your lumbar area.; in a side sleeping position softer coils under your shoulders and hips let the spine remain in a straight horizontal line. For a stomach sleeping position, the middle portion of your body remains level with the rest. For me as a rather large combination sleeper, this mattress checks all of the boxes; my wife is a 140lb side sleeper, and this mattress works great for her as well. Her initial impression was that this mattress was firmer than our previous "medium" traditional spring + foam mattress, but after a couple of nights the foam layers were broken in, and she found the 5-zone structure of support extremely effective as well. One minor oddity: one of the labels on our mattress identified it as a "quilted hybrid", rather than just "hybrid", but that was likely a minor mistake made at the factory. Overall, we are extremely happy with this mattress, and I would gladly recommend it.
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Reviewed in the United States on September 8, 2025 by MATT A
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This review is for the Kendall 13" Medium Hybrid Mattress in King size. I have owned several king mattresses over the past ten years including traditional innerspring, all-foam, and hybrid, in various firmness levels. I chose the Medium because I felt that it offered the best combination of mattress size/weight and overall comfort. A Medium mattress tends to strike a balance between feeling like you’re sinking into a mattress (plush) and laying on top of a mattress (firm). It’s preferable for people who sleep in a variety of different positions or might have a partner who sleeps differently than you do. This is not a compressed “mattress in a box” that requires you to roll it out and let it expand. This mattress ships in a ready-to-use state immediately upon arrival. Because it ships fully expanded, keep in mind it’s large and requires space to maneuver indoors. My initial impression of the mattress’ appearance was positive. It has a high-quality fit and finish with a flat, quilted top. I noticed no imperfections or manufacturing issues with stitching or material anywhere on the mattress. One thing I greatly appreciate is the addition of handles on both sides of the mattress. This greatly assists in moving and rotating the mattress. At 13 inches thick, all of our king-sized sheets and mattress protector fit easily. One thing to keep in mind when purchasing any new mattress is that they usually require a break-in period. The documentation included with the mattress mentions this. The mattress materials need some time to settle and conform to the owner’s body. Thankfully, the mattress includes a very long trial period. Serta states that this type of mattress includes “zoned support,” meaning that the firmness of the springs varies in different sections of the mattress. For example, softer coils are used around the head/shoulders and hips, while firmer coils provide greater support to the midsection and knees. This allows the mattress to have a contouring feel to it, and it’s one of the reasons it appealed to me, as my wife and I both have chronic back problems. After a week of use, here’s what I’ve observed. When I first lie down on the mattress, it feels rather firm. After about five minutes or so, I find my hips and shoulders being cradled down into the mattress. And, I’ve been sleeping soundly through the night. Based on my past experience with similar mattresses, I expect the feel to soften after more break-in time. Those who prefer a softer feel right from the start might consider a thin mattress pad on top of the mattress temporarily while it settles. There are two things about the sleep experience that I’m very impressed by. First is that it sleeps cool. Being in the Deep South, most nights are rather warm, and I usually have an air conditioner and fan running. This mattress seems to have some kind of cooling layer in it that has greatly reduced our need for those cooling items. The other is motion isolation, or the extent to which you can feel when your partner shifts on the mattress. This doesn’t have the same level of motion isolation as an all-foam mattress, but it gets closer than any other innerspring or hybrid mattress I’ve previously used. That’ll definitely contribute to a better night’s sleep. Overall, I’m going to give this five stars, working with the assumption that the materials will eventually relax into a true “medium” feel mattress after a longer break-in period. Be sure to utilize the in-home sleep trial.
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Reviewed in the United States on August 23, 2025 by J.W.M. J.W.M.