Serta Perfect Sleeper Cobalt Calm Medium Pillow Top
GoodBed Expert Review
Our Take on Serta Perfect Sleeper Cobalt Calm Medium Pillow Top

Founder of GoodBed, Leading Mattress Expert
- Want a mattress with a medium amount of softness
- Are either a back or side sleeper, especially if you weigh 200 lb or less
- Often sit or sleep along the edge of your bed (edge support is very good)
- Can sometimes be disturbed by other movements in the bed (motion isolation is very good)
- Enjoy being hugged or cradled by your mattress
- Prefer a slightly below average amount of 'memory feel'
- Weigh 225 lb or more, especially if you sleep on your side
- Don't like much bounce in your mattress
- Have a strong tendency to sleep hot (temperature regulation is pretty good, but not the best)
- Tend to have difficulty changing positions during the night (though ease of repositioning is still pretty good)
- Want a natural or organic mattress (though this mattress is still OK in terms of avoiding harmful chemicals)
Serta Perfect Sleeper Collection Overview
GoodBed Editorial
GoodBed's in-depth discussion of the features and construction of Serta's Perfect Sleeper mattresses, sold as Dazzling Night, Adoring Nights, Cobalt Calm and other names.
See our full reviewMaterials & Construction
Cover | 1.5″ quilted cover (w/ "CoolFeel Fabric") |
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Comfort Layers |
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Transition Layers | 1″ poly foam ("Serta Support Foam") |
Support Layers |
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Total Thickness | 14.5'' |
Compare These Products
Serta Perfect Sleeper Cobalt Calm Medium Pillow Top vs. Other Beds
Compare the Serta Perfect Sleeper Cobalt Calm Medium Pillow Top mattress side by side with other Serta models, or with mattresses from other brands.
Where to Buy
Serta Perfect Sleeper Cobalt Calm Medium Pillow Top

Serta Online Seller
- Free delivery
- Return policy
- Financing available

- Free delivery ($999+)
- 120-day return policy
- Lowest price guarantee
- Financing available
Frequently Asked Questions
Serta Perfect Sleeper Cobalt Calm Medium Pillow Top
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In our evaluation of the Serta Perfect Sleeper Cobalt Calm Medium Pillow Top mattress, we found it to be a Medium (5) on the GoodBed rating scale (1= firmest, 9 = softest).
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Mattress matching is highly personal. This is why GoodBed refuses to publish bogus "best mattress" lists and instead created an advanced mattress matching tool called the GoodBed Quiz. This quiz can assess your requirements in just a few minutes, and then calculate your personal Match Score for the Serta Perfect Sleeper Cobalt Calm Medium Pillow Top mattress, along with any of the other 800+ mattresses that we've evaluated.
To see your Match Score for the Serta Perfect Sleeper Cobalt Calm Medium Pillow Top, simply use this link to take the GoodBed Quiz. Your Match Score for this mattress will be shown at the top of your quiz results, and will include a detailed explanation of how it matches up with your personal mattress requirements. Each Match Score is based on over 50 different Mattress DNA™ attributes that we measure through our proprietary mattress testing framework.
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Yes, the Serta Perfect Sleeper Cobalt Calm Medium Pillow Top 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 Cobalt Calm Medium Pillow Top to have good adjustable base compatibility.
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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 with delivery - Extra fee applies (+$150.00)
- Removal: Removal of old mattress provided with delivery - Extra fee applies
- Notes: Optional white glove delivery service includes set up, as well as the removal of packaging, your old mattress, and the box spring (if applicable).
Expert Q&A
See questions from other mattress buyersOther Models from Serta
Additional Information
General Description
- 1” PerfectPure Fiber.
- 1” PillowSoft Aire, soft foam provides enhanced cushioning for exceptional comfort and promotes airflow through its unique, gently rippling design.
- 0.5” PillowSoft Foam.
- 2” Cushion Quilt Foam.
- 1” Cool Twist Gel Memory Foam, keeps you comfortably cool.
- 1” Serta Support Foam.
- 850 3 Zoned Coil System.
- 1" Serta Balanced Support Pad, strikes the ideal balance of cushioning and support, no matter how firm or plush you prefer your mattress.
About This Model
Status | Active (released 2023) |
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Manufacturer | Serta |
Line | Serta Perfect Sleeper |
Collection | Serta Perfect Sleeper Innerspring Ultimate |
Comfort Level | Medium |
Surface Type | Pillow Top |
Support Type | Innerspring |
Build Details |
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Editor's Note(s)
- On the Serta website, this model is called the Serta Perfect Sleeper Ultimate Medium Pillow Top.
Corrections
Have an update or correction to our information about Serta Perfect Sleeper Cobalt Calm Medium Pillow Top? If so, please take a moment to suggest an edit.