Serta Perfect Sleeper X Hybrid Level 1 Kendall Medium
GoodBed Expert Review
Our Take on Serta Perfect Sleeper X Hybrid Level 1 Kendall Medium

Founder of GoodBed, Leading Mattress Expert
- Want a medium-firm mattress (i.e., just a little firmer than average)
- Are mainly a back sleeper
- Are very easily disturbed by other movements in the bed (motion isolation is exceptional)
- Prefer a slightly above average amount of 'memory feel'
- Would like a mattress that performs very well when used with an adjustable base
- Enjoy sleeping just a bit more 'in' your mattress than 'on' it
- Like a little bounce in your mattress, but not much
- Are a stomach sleeper, especially if you weigh more than 250 lb
- Have a strong tendency to sleep hot (temperature regulation is pretty good, but not the best)
- Regularly sit or sleep along the edge of your bed (edge support is good, but not the best)
- Tend to have difficulty changing positions during the night (though ease of repositioning is still OK)
- Want a natural or organic mattress
Serta Perfect Sleeper X Overview
GoodBed Editorial
The Perfect Sleeper X Collection adds new memory foam and a new five-zone coil unit. Is it right for you?
See our full reviewMaterials & Construction
Cover | Stretch knit ("CoolFeel Fabric") |
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Comfort Layers |
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Transition Layers | 0.5″ poly foam ("Cool Twist Gel Foam") |
Support Layers |
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Total Thickness | 13'' |
Compare These Products
Serta Perfect Sleeper X Hybrid Level 1 Kendall Medium vs. Other Beds
Compare the Serta Perfect Sleeper X Hybrid Level 1 Kendall Medium mattress side by side with other Serta models, or with mattresses from other brands.
Where to Buy
Serta Perfect Sleeper X Hybrid Level 1 Kendall Medium

Serta Online Seller
- Free delivery
- Return policy
- Financing available
Frequently Asked Questions
Serta Perfect Sleeper X Hybrid Level 1 Kendall Medium
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In our evaluation of the Serta Perfect Sleeper X Hybrid Level 1 Kendall Medium mattress, we found it to be a Medium-Firm (4) on the GoodBed rating scale (1= firmest, 9 = softest).
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Yes, the Serta Perfect Sleeper X Hybrid Level 1 Kendall Medium mattress is adjustable base compatible. This means it is designed to be used on an adjustable base without incurring damage or voiding the warranty. In our review of this mattress, we tested it on an adjustable base to look for any adverse effects as the head and foot are elevated, and to see how well it conforms to the contours of the base both with and without the weight of a sleeper. Overall, we found the Kendall Medium to have very good adjustable base compatibility.
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- Length: 10-year warranty.
- Indentation coverage: 0.75" and deeper.
- Proration: 10 years of full ("non-prorated") replacement coverage.
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Here are the in-home trial details for mattresses purchased from the Serta website:
- Policy: Comfort Guarantee -- Mattresses can be returned for refund (after 30 day minimum trial).
- Fees: A 15% return fee + $200 for return shipping is deducted from the amount credited for returns.
- Notes: The iComfort/iSeries In-Home Trial Period is 120 nights. For other products, Serta's Comfort Assurance program is 45 nights.
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Here are the delivery terms for mattresses purchased from the Serta website:
- Policy: Delivery available - Free with any mattress purchase
- Set-up: Set-up provided free with delivery
- Removal: Removal of old mattress provided free with delivery
- Notes: Free “white glove” (2-person) delivery to your bedroom. Includes unpacking and set-up as well as removal of packaging and old bedding if needed.
Expert Q&A
See questions from other mattress buyersOther Models from Serta
Additional Information
General Description
A medium-feel supportive 13” mattress with a layer of 5 zoned coils designed for full-body alignment, plus graphite-infused memory foams for xtra comfort.
Materials & Construction
- Our 5 ZoneActive™ Design combines coils and contouring memory foam to promote full-body alignment designed to offer comfort and support where you need it most.
- Experience targeted pressure relief with Perfect Conform™ Memory Foam that contours and cradles your pressure points for restorative sleep.
- Sleep comfortably throughout the night with cooling technology and 1” of graphite-infused memory foam that redistributes heat away from your body.
- Cool Twist® Gel Memory Foam offers enhanced airflow, heat dissipation, and contouring comfort
- 100% USA Assembled
- *Based on Queen Size. Top fabric and fiber base pad contain recycled plastic
- Law Label Lookup Model Number: 500012071
Responsibly crafted
- CertiPUR-US® Certified means our foam was tested for and is free from harmful chemicals and gasses
Compatibility
- Compatible with most frames, including: traditional frames, box springs, platform frames, slatted frames, bunky boards, and adjustable frames.
Warranty
- Length: 10-year warranty.
- Indentation coverage: 0.75" and deeper.
- Proration: 10 years of full ("non-prorated") replacement coverage.
About This Model
Status | Active (released 2024) |
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Manufacturer | Serta |
Line | Serta Perfect Sleeper X |
Collection | Serta Perfect Sleeper X Smooth Hybrid Level 1 |
Comfort Level | Medium-Firm |
Surface Type | Unquilted |
Support Type | Innerspring |
Build Details |
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Corrections
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